| | Database Title | Category | | Names |
|---|
 | Macdonald Institute: Remembering the Past, Embracing the Future | Social, Regional and General History | | 88 |
| Macfarlane's Genealogical Collections | Family History and Biography | | 32,970 |
 | Mackenzie's Gazette (New York, New York, USA) | Newspapers and Periodicals | | 87,603 |
 | Mackinac, Michigan Naturalization Records | Immigration Records | | 2,808 |
| Macleod Gazette (Fort MacLeod, Alberta, Canada) | Newspapers and Periodicals | | 777,435 |
| Macomb, Michigan Naturalization Records | Immigration Records | | 22,579 |
| Magna Charta Barons and Their Descendants [1915] | Birth, Marriage and Death Records | | 17,789 |
| Magnalia Christi Americana, Volume 1 | Miscellaneous Records and Reference | | 11,398 |
| Magnalia Christi Americana, Volume 2 | Miscellaneous Records and Reference | | 6,786 |
| Mahlon Johnson Family of Littleton, New Jersey, Ancestors and Descendants | Social, Regional and General History | | 9,890 |
| Mahlon Norris Gilbert: Bishop Coadjutor of Minnesota, 1886 - 1900 | Birth, Marriage and Death Records | | 4,077 |
| Maine 1930 US Census Index | Census and Voter Lists | | 747,936 |
| Maine Biographies, Volume 1 | Social, Regional and General History | | 71,508 |
| Maine Biographies, Volume 2 | Social, Regional and General History | | 23,105 |
| Maine Deaths 1960-1996 | Birth, Marriage and Death Records | | 401,960 |
| Maine Marriages 1892-1966 | Birth, Marriage and Death Records | | 1,573,798 |
| Major General John Sedgwick Equestrian Statue Commission | Miscellaneous Records and Reference | | 866 |
| Major Timothy Hatch of Hartford, Connecticut and His Descendants | Social, Regional and General History | | 2,638 |
| Makers of America: Alexander Hamilton | Social, Regional and General History | | 5,231 |
| Makers of America: George Calvert and Cecilius Calvert, Baarons Baltimore | Social, Regional and General History | | 11,877 |
| Makers of America: John Winthrop, First Governor of the Massachusetts Colony | Social, Regional and General History | | 2,118 |
| Makers of America: Most Reverend John Hughes, First Archbishop of New York | Miscellaneous Records and Reference | | 3,686 |
| Makers of America: Thomas Jefferson | Miscellaneous Records and Reference | | 4,528 |
| Maltby Booklet Number 2 | Social, Regional and General History | | 1,821 |
| Malvern Republic Leader (Malvern,Iowa) | Newspapers and Periodicals | | 39,266 |
| Man (London,United Kingdom) | Newspapers and Periodicals | | 60 |
| Manasquan, New Jersey : Settled 1685, Incorporated 1887 | Social, Regional and General History | | 6,769 |
| Manchester, Salford 1933 Kellys Directory | Directories and Lists | | 330,480 |
| Manitoba Daily Free Press (Winnipeg,Canada) | Newspapers and Periodicals | | 1,207 |
| Manitoba Free Press (Winnipeg,Canada) | Newspapers and Periodicals | | 45,318 |
| Manitoba Morning Free Press (Winnipeg,Canada) | Newspapers and Periodicals | | 64,775 |
| Manitoba Provincial (Subscriber and Classified) Telephone Directory, December 1947 | Directories and Lists | | 69,729 |
| Manitoban (Winnipeg, Manitoba, Canada) | Newspapers and Periodicals | | 126,951 |
| Mankato, Its First Fifty, 1852 - 1902 | Miscellaneous Records and Reference | | 21,938 |
| Manuscript Department of the Minnesota Historical Society, Service Bulletin Number Two | Social, Regional and General History | | 332 |
| Maps for Family and Local History: The Records of the Tithe, Valuation Office and National Farm Surveys, Second Edition | Court, Land, and Probate Records | | 7,387 |
| Maquoketa Sentinel (Maquoketa, Iowa) | Newspapers and Periodicals | | 827,865 |
| Marchmont and the Humes of Polwarth | Social, Regional and General History | | 10,614 |
| Marcus A. Hanna, Late a Senator from Ohio | Miscellaneous Records and Reference | | 4,033 |
| Marcus Alonzo Hanna: His Life and Work | Miscellaneous Records and Reference | | 6,266 |
| Margaret and Charley: The Personal Story of Dr. Charles Best, the Co-Discoverer of Insulin | Social, Regional and General History | | 26,321 |
| Margaret Fuller | Social, Regional and General History | | 5,186 |
| Margaret Winthrop | Social, Regional and General History | | 2,227 |
| Mariages Catholiques de la Region de Perth, Ontario | Birth, Marriage and Death Records | | 19,821 |
| Mariages de Notre Dame de Foy (1699), St. Colomb (1855), St. Michael's Chapel (1860), St. Felix (1862), St. Charles Garnier (1944) | Birth, Marriage and Death Records | | 21,319 |
| Mariages de Argenteuil, 1856 - 1984 | Birth, Marriage and Death Records | | 11,900 |
| Mariages de Boucherville, 1668 - 1900 | Birth, Marriage and Death Records | | 15,232 |
| Mariages de Charlesbourg (St. Charles), 1679 - 1970 | Birth, Marriage and Death Records | | 21,112 |
| Mariages de Comte de Levis, 1775 - 1968 | Birth, Marriage and Death Records | | 24,167 |
| Mariages de Comte de Levis, 1854 - 1967 | Birth, Marriage and Death Records | | 19,270 |
| Mariages de Comte de Lotbiniere, 1744 - 1950 | Birth, Marriage and Death Records | | 9,625 |
| Mariages de Comte de Lotbiniere, 1829 -1873 | Birth, Marriage and Death Records | | 20,542 |
| Mariages de Comte de St. Hyacinthe, 1806 - 1967 | Birth, Marriage and Death Records | | 19,099 |
| Mariages de Contrecoeur (1668 - 1966), St. Roch sur Richelieu (1859 - 1966) | Birth, Marriage and Death Records | | 13,584 |
| Mariages de Diocese de Saint Hyacinthe, 1823 - 1876 | Birth, Marriage and Death Records | | 22,677 |
| Mariages de Granby, 1844 - 1970 | Birth, Marriage and Death Records | | 38,539 |
| Mariages de la Baie du Febvre, 1715 - 1966 | Birth, Marriage and Death Records | | 47,844 |
| Mariages de la Paroisse de la Purification Repentigny, 1669 - 1970 | Birth, Marriage and Death Records | | 12,892 |
| Mariages de La Paroisse de Sainte Genevieve de Pierrefonds, 1741 - 1972 | Birth, Marriage and Death Records | | 21,312 |
| Mariages de la Paroisse de St. Antoine de Pade de Longueuil, 1701 - 1980 | Birth, Marriage and Death Records | | 32,864 |
| Mariages de la Paroisse de St. Francois de Sales Ile Jesus, 1702 - 1981 | Birth, Marriage and Death Records | | 8,632 |
| Mariages de la Paroisse de St. Justin, Maskinonge, 1858 - 1971 | Birth, Marriage and Death Records | | 8,694 |
| Mariages de la Paroisse de St. Martin de L'Ile Jesus, 1774 - 1970 | Birth, Marriage and Death Records | | 21,795 |
| Mariages de la Paroisse de St. Paul, Montreal, 1874 - 1979 | Birth, Marriage and Death Records | | 18,484 |
| Mariages de La Paroisse de Ste. Rose sur L'Ile Jesus, 1740 - 1970 | Birth, Marriage and Death Records | | 21,019 |
| Mariages de la Paroisse du Bic, 1850 - 1976 | Birth, Marriage and Death Records | | 31,325 |
| Mariages de La Paroisse Notre Dame de Montreal, 1642 -1850, L - Z, Part 2 | Birth, Marriage and Death Records | | 36,560 |
| Mariages de la Paroisse Saint Gregoire de Nazianze de Buckingham, 1836 - 1975 | Birth, Marriage and Death Records | | 17,908 |
| Mariages de la Paroisse Saint Laurent, Montreal, 1720 - 1974 | Birth, Marriage and Death Records | | 25,155 |
| Mariages de la Paroisse St. Cuthbert, Comte de Berthier, 1770 - 1983 | Birth, Marriage and Death Records | | 24,255 |
| Mariages de la Paroisse St. Vincent de Paul sur L'Ile Jesus, 1743 - 1970 | Birth, Marriage and Death Records | | 22,389 |
| Mariages de la Paroisse Ste. Elisabeth Comte de Berthier, 1802 - 1982 | Birth, Marriage and Death Records | | 27,008 |
| Mariages de la Paroisse Ste. Scholastique, 1825 - 1981 | Birth, Marriage and Death Records | | 16,925 |
| Mariages de la Region de Drummondville, 1842 - 1967 | Birth, Marriage and Death Records | | 35,913 |
| Mariages de la Region de Drummondville, 1850 - 1922 | Birth, Marriage and Death Records | | 27,731 |
| Mariages de la Region des Laurentides, 1879 - 1984 | Birth, Marriage and Death Records | | 23,902 |
| Mariages de la Ville de Levis, 1852 - 1950 | Birth, Marriage and Death Records | | 33,716 |
| Mariages de la Visitation du Sault au Recollet, 1736 - 1970 | Birth, Marriage and Death Records | | 17,120 |
| Mariages de Lachine: Saints Anges de Lachine, 1676 - 1970 | Birth, Marriage and Death Records | | 31,651 |
| Mariages de Lachute, 1883 - 1984 | Birth, Marriage and Death Records | | 21,830 |
| Mariages de Lauzon, 1679 - 1975 | Birth, Marriage and Death Records | | 30,973 |
| Mariages de Loretteville (1761-1969) et Village des Hurons (1904-1969) | Birth, Marriage and Death Records | | 27,225 |
| Mariages de Notre Dame de Montreal, 1620 - 1900 | Birth, Marriage and Death Records | | 42,207 |
| Mariages de Notre Dame de Saint Hyacinthe, 1777 - 1969 | Birth, Marriage and Death Records | | 28,754 |
| Mariages de Notre Dame du Mont Carmel Co. Kamouraska, 1867 - 1978 | Birth, Marriage and Death Records | | 9,132 |
| Mariages de Pierreville, 1839 - 1964 | Birth, Marriage and Death Records | | 15,548 |
| Mariages de Riviere Ouelle, 1672 - 1972 | Birth, Marriage and Death Records | | 39,450 |
| Mariages de Saint Alexis des Monts Comte Maskinonge, 1872 - 1976 | Birth, Marriage and Death Records | | 11,137 |
| Mariages de Saint Hyacinthe, 1853 - 1950 | Birth, Marriage and Death Records | | 43,348 |
| Mariages de Saint Pascal de Kamouraska, 1827 - 1977 | Birth, Marriage and Death Records | | 16,238 |
| Mariages de Saint-Frederic, Drummondville, 1815 - 1965 | Birth, Marriage and Death Records | | 26,131 |
| Mariages de St Guillaume d'Upton (1835-1966), St. David d'Yamaska (1835-1966) | Birth, Marriage and Death Records | | 28,104 |
| Mariages de St Ours (Immaculee Conception), 1750 - 1975 | Birth, Marriage and Death Records | | 16,182 |
| Mariages de St. Antoine sur Richelieu, 1741 - 1965 | Birth, Marriage and Death Records | | 11,654 |
| Mariages de St. Charles (1741-1967), St. Hilaire (1799-1967), St. Jean Baptiste (1797-1967), Otterburn Park (1960-1967) | Birth, Marriage and Death Records | | 28,899 |
| Mariages de St. Denis sur Richelieu Comte de Vercheres, 1740 - 1964 | Birth, Marriage and Death Records | | 14,560 |
| Mariages de St. Francois d'Assise de la Longue Pointe, 1724 - 1975 | Birth, Marriage and Death Records | | 14,654 |
| Mariages de St. Francois du Lac, 1687 - 1965 | Birth, Marriage and Death Records | | 15,296 |
| Mariages de St. Jean Chrysostome (1830 - 1966), St. Romuald d'Etchemin (1854 - 1966) | Birth, Marriage and Death Records | | 24,884 |
| Mariages de St. Joseph de Chambly, 1706 - 1964 | Birth, Marriage and Death Records | | 20,100 |
| Mariages de St. Michel d'Yamaska, 1727 - 1965 | Birth, Marriage and Death Records | | 19,599 |
| Mariages de St. Pierre de Sorel, 1675 - 1865 | Birth, Marriage and Death Records | | 14,469 |
| Mariages de St. Roch de Quebec, 1829 - 1900 | Birth, Marriage and Death Records | | 40,184 |
| Mariages de Ste Genevieve de Berthier, 1727 - 1800, Volume 3 | Birth, Marriage and Death Records | | 10,408 |
| Mariages de Ste. Cunegonde, Montreal, 1874 - 1978 | Birth, Marriage and Death Records | | 44,475 |
| Mariages de Ste. Flore, Comte St. Maurice, 1867 - 1977 | Birth, Marriage and Death Records | | 6,341 |
| Mariages de Varennes, 1693 - 1968 | Birth, Marriage and Death Records | | 31,660 |
| Mariages de Vercheres, 1724 - 1966 | Birth, Marriage and Death Records | | 17,521 |
| Mariages du Comte d'Argenteuil, 1833 - 1960 | Birth, Marriage and Death Records | | 19,476 |
| Mariages du Comte d'Argenteuil, 1833 - 1960, Volume 2 | Birth, Marriage and Death Records | | 42,244 |
| Mariages du Comte de Laprairie, 1751 - 1972 | Birth, Marriage and Death Records | | 62,246 |
| Mariages du Comte de L'Assomption, 1679 - 1960, Volume 1 | Birth, Marriage and Death Records | | 65,700 |
| Mariages du Comte de L'Assomption, 1679 - 1960, Volume 2 | Birth, Marriage and Death Records | | 56,222 |
| Mariages du Comte de L'Assomption, 1679 - 1960, Volume 3 | Birth, Marriage and Death Records | | 78,721 |
| Mariages du Comte de Missisquoi, 1846 - 1968 | Birth, Marriage and Death Records | | 50,788 |
| Mariages du Comte de Pontiac, 1836 - 1973 | Birth, Marriage and Death Records | | 46,934 |
| Mariages du Comte de Portneuf, 1679 - 1900 | Birth, Marriage and Death Records | | 54,169 |
| Mariages du Comte de Quebec, 1832 - 1966 | Birth, Marriage and Death Records | | 20,021 |
| Mariages du Comte de Rouville, 1739 - 1968 | Birth, Marriage and Death Records | | 15,097 |
| Mariages du Comte de Rouville, 1801 - 1968 | Birth, Marriage and Death Records | | 26,586 |
| Mariages du Comte de Saint Jean, 1828 - 1950 | Birth, Marriage and Death Records | | 42,088 |
| Mariages du Comte de Shefford, 1846 - 1968 | Birth, Marriage and Death Records | | 44,898 |
| Mariages du Comte de Soulanges, 1752 - 1966s | Birth, Marriage and Death Records | | 53,893 |
| Mariages du Comte de Yamaska, 1846 - 1964 | Birth, Marriage and Death Records | | 16,675 |
| Mariages et Necrologe Co. Matapedia, 1873 - 1978 | Birth, Marriage and Death Records | | 10,911 |
| Mariages et Necrologe de Armagh, 1857 - 1973 | Birth, Marriage and Death Records | | 17,538 |
| Mariages et Necrologe de la Paroisse St. Charles, 1749 - 1974 | Birth, Marriage and Death Records | | 27,187 |
| Mariages et Necrologe de la Paroisse St. Raphael, 1851 - 1974 | Birth, Marriage and Death Records | | 25,083 |
| Mariages et Necrologe de N.D. Auxiliatrice de Buckland, Bellechasse, 1863 - 1974 | Birth, Marriage and Death Records | | 11,238 |
| Mariages et Necrologe de Saint Vallier, 1713 - 1975 | Birth, Marriage and Death Records | | 43,230 |
| Mariages et Necrologe de St. Magloire, Bellechasse, 1872 - 1975 | Birth, Marriage and Death Records | | 11,472 |
| Mariages et Necrologe, St. Gervais, 1780 - 1973 | Birth, Marriage and Death Records | | 33,003 |
| Mark Hopkins | Miscellaneous Records and Reference | | 6,289 |
| Markham Economist and Sun (Markham, Ontario, Canada) | Newspapers and Periodicals | | 803,761 |
| Marks-Platt Ancestry | Family Trees | | 4,456 |
| Marmaduke and Rebecca (Morris) Earle | Social, Regional and General History | | 3,035 |
| Marriage and Death Notices in Raleigh Register and North Carolina State Gazette, 1846 - 1855 | Birth, Marriage and Death Records | | 37,570 |
| Marriage Bonds of Bedford County, Virginia, 1755 - 1800 (Free until 30 Nov 2009) | Birth, Marriage and Death Records | | 8,094 |
| Marriage Bonds of Bedford County, Virginia, 1755 - 1800, Bedford County, Virginia: Index of Wills, 1754 - 1830 (Free until 30 Nov 2009) | Birth, Marriage and Death Records | | 5,783 |
| Marriage Notices from the Charolette Journal, Charlotte, North Carolina, July 3, 1835 - December 7, 1851 | Birth, Marriage and Death Records | | 8,222 |
| Marriage Notices from the Western Democrat, Charlotte, North Carolina, 1853 - 1870, Volume 1 | Birth, Marriage and Death Records | | 40,605 |
| Marriage Notices in the South Carolina Gazette and Its Successors, 1732 - 1801 (Free until 30 Nov 2009) | Birth, Marriage and Death Records | | 10,434 |
| Marriage Notices in the South-Carolina and American General Gazette, 1766 - 1781 and The Royal Gazette, 1781 - 1782 | Birth, Marriage and Death Records | | 3,366 |
| Marriage Notices in the South-Carolina Gazette and Its Successors, 1732 - 1801 (Free until 30 Nov 2009) | Birth, Marriage and Death Records | | 11,697 |
| Marriage Records Dunklin County, Missouri, 1872 - 1890 | Birth, Marriage and Death Records | | 11,622 |
| Marriage Records of Berkeley County, Virginia 1781 - 1854 | Birth, Marriage and Death Records | | 30,755 |
| Marriage Records of Brunswick County, Virginia, 1730 - 1852 (Free until 30 Nov 2009) | Birth, Marriage and Death Records | | 9,620 |
| Marriage Records of Caldwell County, Missouri, 1845 - 1871 | Birth, Marriage and Death Records | | 5,718 |
| Marriage Records of Chariton County, Missouri, 1821 - 1852 | Birth, Marriage and Death Records | | 6,895 |
| Marriage Records of Hunterdon County, New Jersey, 1795 - 1875, Volume 1 | Birth, Marriage and Death Records | | 22,042 |
| Marriage Records of Linn County, Missouri, 1842 - 1857 | Birth, Marriage and Death Records | | 4,217 |
| Marriage Records of Nacogdoches County, Texas, 1824 - 1881 | Birth, Marriage and Death Records | | 10,825 |
| Marriage records of Rev. John Langhorn.(CofE) of Fredericksburgh, 1789 to 1813 | Directories and Lists | | 2,291 |
| Marriage Records of Scioto County, Ohio, 1803 - 1860 | Birth, Marriage and Death Records | | 23,018 |
| Marriage Records, Lane County, Oregon, 1852 - 1869 | Miscellaneous Records and Reference | | 7,298 |
| Marriages in Vercheres County, Quebec 1772 - 1968 | Birth, Marriage and Death Records | | 29,361 |
| Marriages and Burials of St. Damien (1882 - 1972) and HonFleur (1903 - 1972) | Birth, Marriage and Death Records | | 11,738 |
| Marriages and Deaths Dutchess County, New York 1778 - 1825 | Birth, Marriage and Death Records | | 4,996 |
| Marriages and Deaths from the Maryland Gazette, 1727 - 1839 (Free until 30 Nov 2009) | Birth, Marriage and Death Records | | 8,350 |
| Marriages and Deaths from the Northern Whig, published in Hudson, New York, 1823 - 1828 | Birth, Marriage and Death Records | | 597 |
| Marriages du Comte de Frontenac, 1865 - 1950 | Birth, Marriage and Death Records | | 27,112 |
| Marriages in Bagot, Quebec, 1827 - 1968 | Birth, Marriage and Death Records | | 36,983 |
| Marriages in Bagot, Quebec, 1833 - 1968 | Birth, Marriage and Death Records | | 27,414 |
| Marriages in Fountain County Indiana, 1826 - 1848 | Birth, Marriage and Death Records | | 17,281 |
| Marriages in Rouville, Quebec, 1822 - 1967 | Birth, Marriage and Death Records | | 30,635 |
| Marriages in the Nauvoo Region 1839-1845 | Birth, Marriage and Death Records | | 64,520 |
| Marriages Lotbiniere County, 1867 - 1967 | Birth, Marriage and Death Records | | 7,478 |
| Marriages of Batiscan, 1682 - 1900 | Birth, Marriage and Death Records | | 12,323 |
| Marriages of Bute and Warren Counties, North Carolina 1764 - 1868 | Birth, Marriage and Death Records | | 30,124 |
| Marriages of Chatham County, North Carolina, 1772 - 1868 | Birth, Marriage and Death Records | | 8,827 |
| Marriages of Christ Church (Anglican), 1784 - 1970 | Birth, Marriage and Death Records | | 3,035 |
| Marriages of Davidson County, Tennessee, 1789 - 1847 | Birth, Marriage and Death Records | | 28,690 |
| Marriages of Genevieve de Berthier, 1727 - 1800, Volume 1 | Birth, Marriage and Death Records | | 1,964 |
| Marriages of Goochland County, Virginia, 1733 - 1815 (Free until 30 Nov 2009) | Birth, Marriage and Death Records | | 18,608 |
| Marriages of Granville County, North Carolina, 1753 - 1868 (Free until 30 Nov 2009) | Birth, Marriage and Death Records | | 46,109 |
| Marriages of Henryville, 1852 - 1970 | Birth, Marriage and Death Records | | 20,915 |
| Marriages of Isle of Wight County, Virginia, 1628-1800 (Free until 30 Nov 2009) | Birth, Marriage and Death Records | | 7,607 |
| Marriages of L'Acadie (1785) and St. Luc (1801) | Birth, Marriage and Death Records | | 16,868 |
| Marriages of L'Enfant Jesus de la Pointe aux Trembles, 1674 - 1975 | Birth, Marriage and Death Records | | 20,273 |
| Marriages of Loudoun County, Virginia, 1757 - 1853 | Birth, Marriage and Death Records | | 27,031 |
| Marriages of Mecklenburg County [Virginia] from 1765 to 1810 | Birth, Marriage and Death Records | | 12,613 |
| Marriages of Mobile County, Alabama, 1813 - 1855 | Birth, Marriage and Death Records | | 20,956 |
| Marriages of Monmouth County, New Jersey, 1795 - 1843 | Birth, Marriage and Death Records | | 13,999 |
| Marriages of Mont St. Gregoire, 1841 - 1950 | Birth, Marriage and Death Records | | 9,519 |
| Marriages of N.D. de la Misericorde, Beauport, 1673 - 1966 | Birth, Marriage and Death Records | | 21,211 |
| Marriages of Notre Dame des Neiges, Trois Pistoles, 1713 - 1979 | Birth, Marriage and Death Records | | 26,491 |
| Marriages of Notre Dame Sorel, 1911 - 1865 | Birth, Marriage and Death Records | | 8,656 |
| Marriages of Orange County Virginia, 1747 - 1810 | Birth, Marriage and Death Records | | 6,104 |
| Marriages of Orange County, North Carolina, 1779 - 1868 | Birth, Marriage and Death Records | | 44,752 |
| Marriages of Pointe Claire, 1713 - 1974 | Birth, Marriage and Death Records | | 21,129 |
| Marriages of Rowan County, North Carolina, 1753 - 1868 (Free until 30 Nov 2009) | Birth, Marriage and Death Records | | 52,380 |
| Marriages of Sainte Rose de Lima, 1890 - 1963 | Birth, Marriage and Death Records | | 4,841 |
| Marriages of Some Virginia Residents, 1607 - 1800, Volume 1 (Free until 30 Nov 2009) | Birth, Marriage and Death Records | | 84,530 |
| Marriages of Some Virginia Residents, 1607 - 1800, Volume 2 (Free until 30 Nov 2009) | Birth, Marriage and Death Records | | 80,330 |
| Marriages of Some Virginia Residents, 1607 - 1800, Volume 3 (Free until 30 Nov 2009) | Birth, Marriage and Death Records | | 30,562 |
| Marriages of St. Alexandre, 1851 - 1979 | Birth, Marriage and Death Records | | 16,967 |
| Marriages of St. Athanase, Iberville, 1823 - 1965 | Birth, Marriage and Death Records | | 23,504 |
| Marriages of St. Joseph, Huntingdon, 1852 - 1980 | Birth, Marriage and Death Records | | 8,787 |
| Marriages of St. Louis de Bonsecours, 1876 - 1970 | Birth, Marriage and Death Records | | 3,492 |
| Marriages of St. Louis, 1692 - 1965 | Birth, Marriage and Death Records | | 15,445 |
| Marriages of St. Louis, 1739 - 1974 | Birth, Marriage and Death Records | | 29,590 |
| Marriages of St. Patrices de Hinchinbrooke, Athelstan, 1826 - 1975 | Birth, Marriage and Death Records | | 1,689 |
| Marriages of St. Pierre de Sorel, 1865 - 1965 | Birth, Marriage and Death Records | | 27,513 |
| Marriages of St. Sebastien, 1864 - 1960 | Birth, Marriage and Death Records | | 2,655 |
| Marriages of St. Timothee (1823 - 1971) and St. Louis de Gonzague (1847 - 1971) | Birth, Marriage and Death Records | | 17,636 |
| Marriages of Ste Julie, 1852 - 1965 | Birth, Marriage and Death Records | | 11,118 |
| Marriages of Ste. Anne de Sabrevois, 1886 - 1980 | Birth, Marriage and Death Records | | 5,050 |
| Marriages of Ste. Anne Sorel, 1876 - 1965 | Birth, Marriage and Death Records | | 4,152 |
| Marriages of Ste. Barbe, 1884 - 1975 | Birth, Marriage and Death Records | | 2,083 |
| Marriages of Ste. Croix, 1727 - 1965 | Birth, Marriage and Death Records | | 12,916 |
| Marriages of Ste. Genevieve de Berthier, 1826 - 1850, Volume 3 | Birth, Marriage and Death Records | | 36,518 |
| Marriages of Ste. Helene, 1850 - 1969 | Birth, Marriage and Death Records | | 9,249 |
| Marriages of Ste. Sophie, 1851 - 1980 | Birth, Marriage and Death Records | | 5,520 |
| Marriages of Ste. Theodosie, 1880 - 1967 | Birth, Marriage and Death Records | | 2,288 |
| Marriages of Ste. Victoire, 1843 - 1970 | Birth, Marriage and Death Records | | 7,322 |
| Marriages of St-Nicolas, Levis County, Quebec, 1694 - 1964 | Birth, Marriage and Death Records | | 18,456 |
| Marriages of Sumner County, Tennessee, 1787 - 1838 | Birth, Marriage and Death Records | | 23,122 |
| Marriages of Surry County, North Carolina 1779 - 1868 | Birth, Marriage and Death Records | | 27,614 |
| Marriages of Wilkes County, North Carolina 1778 - 1868 | Birth, Marriage and Death Records | | 23,606 |
| Marriages taken from the Otsego Herald, Western Advertiser and Freeman's Journal, 1795 - 1840 | Birth, Marriage and Death Records | | 30,985 |
| Marse Henry"""""""": An Autobiography, Volume 1 | Social, Regional and General History | | 2,103 |
| Marse Henry"""""""": An Autobiography, Volume 2 | Social, Regional and General History | | 1,939 |
| Marsh Genealogy : Giving Several Thousand Descendants of John Marsh of Hartford, Connecticut, 1636 - 1895 | Family Trees | | 17,123 |
| Marshall County, Kentucky Census 1870 | Census and Voter Lists | | 8,686 |
| Marshall County, Kentucky Census of 1850 | Census and Voter Lists | | 4,795 |
| Marshall County, Kentucky Census of 1860 | Birth, Marriage and Death Records | | 2,455 |
| Marshall County, Kentucky Newspaper Genealogical Abstracts, Volume 3 | Birth, Marriage and Death Records | | 5,708 |
| Marshall County, Kentucky Newspaper Genealogical Abstracts, Volume 4 | Birth, Marriage and Death Records | | 7,047 |
| Marshall County, Kentucky, Birth Records, 1852 - 1859, 1861 | Birth, Marriage and Death Records | | 10,627 |
| Marshall County, Kentucky, Deeds, Volume 2, 1850 - 1852 | Court, Land, and Probate Records | | 4,513 |
| Marshall Expounder (Marshall, Michigan) | Newspapers and Periodicals | | 402,282 |
| Marshall Newell: A Memorial For His Classmates and Friends | Miscellaneous Records and Reference | | 274 |
| Marshall Statesman (Marshall, Michigan) | Newspapers and Periodicals | | 6,542,133 |
| Marte (General, Mexico) | Newspapers and Periodicals | | 5,685 |
| Martin Genealogy. Descendants of Lieutenant Samuel Martin of Wethersfield, Connecticut | Family Trees | | 10,162 |
| Mary and Martha, the Mother and the Wife of George Washington | Miscellaneous Records and Reference | | 4,419 |
| Mary Elizabeth Sargent | Social, Regional and General History | | 236 |
| Mary Morison: A Memorial | Miscellaneous Records and Reference | | 111 |
| Maryland 1930 US Census Index | Census and Voter Lists | | 1,481,886 |
| Maryland and Virginia Colonials: Genealogies of Some Colonial Families, Volume 1 | Family Trees | | 66,384 |
| Maryland and Virginia Colonials: Genealogies of Some Colonial Families, Volume 2 | Birth, Marriage and Death Records | | 49,099 |
| Maryland Revolutionary Records (Free until 30 Nov 2009) | Military Subjects | | 7,704 |
| Maryland. Index to the Wills of St. Mary's County, 1662 - 1960 and Somerset County, 1664 - 1955 (Free until 30 Nov 2009) | Court, Land, and Probate Records | | 13,170 |
| Marysville Tribune (Marysville,Ohio) | Newspapers and Periodicals | | 89,496 |
| Mason County, West Virginia Marriages, 1806-1915 | Birth, Marriage and Death Records | | |
| Massachusetts 1930 US Census Index | Census and Voter Lists | | 4,132,279 |
| Massachusetts and Maine Families in the Ancestry of Walter Goodwin Davis, 1885 - 1966 | Family Trees | | 51,838 |
| Massachusetts Bay Connections | Social, Regional and General History | | 7,314 |
| massachusetts civil list 1630 (Free until 30 Nov 2009) | Birth, Marriage and Death Records | | |
| Massachusetts Gravestone Photo Project | Directories and Lists | | 4,509 |
| Massasoit of the Wampanoags | Miscellaneous Records and Reference | | 1,309 |
| Massillon Item (Massillon,Ohio) | Newspapers and Periodicals | | 83,320 |
| Material For a Genealogy of the Scammon Family in Maine | Social, Regional and General History | | 758 |
| Materials For a Genealogy of the Sparhawk Family in New England | Social, Regional and General History | | 2,514 |
| Materials For a History of the Family of John Sullivan of Berwick, New England | Social, Regional and General History | | 3,058 |
| Materials For a History of the Wither Family | Social, Regional and General History | | 21,774 |
| Mathesius-Suvun Sukuluettelo | Birth, Marriage and Death Records | | 62 |
| Mathew Dill Genealogy: A Study of the Dill Family of Dillsburg, York County, Pennslyvania, 1698 - 1935, Part 2 | Social, Regional and General History | | 8,346 |
| Mathew Dill Genealogy: A Study of the Dill Family of Dillsburg, York County, Pennsylvania, 1698 - 1935, Volume 1 | Social, Regional and General History | | 15,346 |
| Mathew Dill Genealogy: A Study of the Dill Family of Dillsburg, York County, Pennsylvania, 1698 - 1935, Volume 2 | Social, Regional and General History | | 5,518 |
| Matson Meier-Smith: Memories of His Life and Work | Social, Regional and General History | | 3,095 |
| Matthew Calbraith Perry: A Typical American Naval Officer | Miscellaneous Records and Reference | | 3,351 |
| Matthias Farnsworth and His Descendants in America: A Monograph | Social, Regional and General History | | 9,071 |
| Mattie Shaw Yeater Of Mississippi and South Texas (compiled by V.Ben Bloxham) | Birth, Marriage and Death Records | | 6,021 |
| Maurice Times (Maurice, Iowa) | Newspapers and Periodicals | | 840,651 |
| Maury County, Tennesse, Will Book, Volume 1 | Birth, Marriage and Death Records | | 1,681 |
| Maury County, Tennessee, Road Minutes Book | Birth, Marriage and Death Records | | 1,069 |
| Maury County, Tennessee, Will Book, Volume 1 | Birth, Marriage and Death Records | | 600 |
| Maury County, Tennessee, Will Book, Volume 2 | Birth, Marriage and Death Records | | 1,619 |
| Maximilian Family Tree | Family Trees | | 147,364 |
| Maximilian Family Tree Family Groups | Social, Regional and General History | | 73,106 |
| Maxwell Maxim (Maxwell,New Mexico) | Newspapers and Periodicals | | 269 |
| Mayflower Ancestry of Elizabeth Ely Goodrich and Her Descendants | Social, Regional and General History | | 4,966 |
| Mayflower Descendants and Their Marriages (Free until 30 Nov 2009) | Birth, Marriage and Death Records | | 2,992 |
| Mayflower Descendents in Cape May County 1620 - 1920 (Free until 30 Nov 2009) | Birth, Marriage and Death Records | | 8,111 |
| Mayflower Pilgrim Descendants in Cape May County, New Jersey | Miscellaneous Records and Reference | | 24,852 |
| McClellan's Own Story | Social, Regional and General History | | 7,478 |
| Mccracken County, Kentucky Census of 1840 | Census and Voter Lists | | 2,297 |
| McCracken County, Kentucky Census of 1850 | Census and Voter Lists | | 5,588 |
| McCracken County, Kentucky Deeds, Volume 4, May 1837 - September 1838 | Birth, Marriage and Death Records | | 3,459 |
| McCracken County, Kentucky Newspaper Abstracts, Volume F, April 12, 1919 - May 12, 1919 | Birth, Marriage and Death Records | | 5,161 |
| McCracken County, Kentucky Newspaper Abstracts, Volume G, May 21, 1919 - June 10, 1919 | Birth, Marriage and Death Records | | 5,226 |
| McCracken County, Kentucky Newspaper Abstracts, Volume H, May 12, 1919 - June 23, 1919 | Birth, Marriage and Death Records | | 4,882 |
| McCracken County, Kentucky Newspaper Abstracts, Volume I, June 23, 1919 - July 11, 1919 | Birth, Marriage and Death Records | | 4,678 |
| McCracken County, Kentucky Newspaper Abstracts, Volume J, July 11, 1919 - July 30, 1919 | Birth, Marriage and Death Records | | 4,713 |
| McCracken County, Kentucky Newspaper Abstracts, Volume K, July 30, 1919 - August 21, 1919 | Birth, Marriage and Death Records | | 3,038 |
| Mccracken County, Kentucky Tax Lists, 1824 - 1836 | Court, Land, and Probate Records | | 2,611 |
| Mccracken County, Kentucky, Newspaper Abstracts, Volume C | Newspapers and Periodicals | | 4,329 |
| McCurtain County and Southeast Oklahoma: History, Biography, Statistics | Miscellaneous Records and Reference | | 17,660 |
| McGill University at War, 1914 - 1916, 1939 - 1945 | Military Subjects | | 33,292 |
| McKean County Democrat (Smethport,Pennsylvania) | Newspapers and Periodicals | | 1,265 |
| Mcnair, Mcnear, and Mcneir Genealogies | Social, Regional and General History | | 10,603 |
| Mean Streets | Social, Regional and General History | | 3,531 |
| Mecklenburg County, North Carolina Deeds, Volume 1, July 1778 - March 1779 | Court, Land, and Probate Records | | 4,355 |
| Mecklenburg County, North Carolina, Deeds, Volume 2, September 1779 - October 1782 | Court, Land, and Probate Records | | 4,385 |
| Mecklenburg County, North Carolina, Deeds, Volume 3, October 1782 - September 1786 | Court, Land, and Probate Records | | 4,523 |
| Mecklenburg County, North Carolina, Tax Lists, 1806 - 1810 | Birth, Marriage and Death Records | | 7,265 |
| Mecklenburg County, North Carolina. Abstracts of Early Wills, 1763 - 1790 (1749 - 1790) | Court, Land, and Probate Records | | 8,702 |
| Medical Directory 1915 | Directories and Lists | | 35,160 |
| Medical Directory New South Wales 1903 | Directories and Lists | | 6,180 |
| Medical Memoirs of 50 Years in Kalamazoo | Birth, Marriage and Death Records | | 14,839 |
| Meet Shieldsville: The Story of St. Patrick's Parish, Shieldsville, Minnesota | Miscellaneous Records and Reference | | 11,407 |
| Meet Your Grandfather: A Sketch-Book of the Hagood - Tobin Family | Social, Regional and General History | | 8,448 |
| Meitzler Ahnentafel Pedigree Chart Collection | Family Trees | | 3,005,030 |
| Melbourne Directory 1854 (Butterfield) | Directories and Lists | | 25,200 |
| Melbourne Directory 1859 (Tanner) | Directories and Lists | | 33,800 |
| Melbourne Directory 1860 (Sands) | Directories and Lists | | 55,200 |
| Melbourne Directory 1861 (Sands) | Directories and Lists | | 56,160 |
| Melbourne Directory 1862 (Sands) | Directories and Lists | | 58,560 |
| Melbourne Directory 1863 (Sands) | Directories and Lists | | 66,720 |
| Melbourne Directory 1864 (Sands) | Directories and Lists | | 72,960 |
| Melbourne Directory 1865 (Sands) | Directories and Lists | | 72,480 |
| Melbourne Directory 1866 (Sands) | Directories and Lists | | 80,040 |
| Melbourne Directory 1867 (Sands) | Directories and Lists | | 87,720 |
| Melbourne Directory 1868 (Sands) | Directories and Lists | | 98,760 |
| Melbourne Directory 1869 (Sands) | Directories and Lists | | 106,800 |
| Melbourne Directory 1870 (Sands) | Directories and Lists | | 110,160 |
| Melbourne Directory 1875 (Sands) | Directories and Lists | | 131,880 |
| Melbourne Directory 1880 (Sands) | Directories and Lists | | 120,120 |
| Melbourne Directory 1884 (Sands) | Directories and Lists | | 152,160 |
| Melbourne Directory 1892 (Sands) | Directories and Lists | | 187,800 |
| Melbourne Directory 1893 (Sands) | Directories and Lists | | 178,920 |
| Mellette County, South Dakota, 1911 - 1961 | Miscellaneous Records and Reference | | 34,801 |
| Members Admitted to the Inner temple 1547 - 1660 | Directories and Lists | | 24,881 |
| Members of the Ellsworth and McArthur Handcart Companies of 1856 | Birth, Marriage and Death Records | | 532 |
| Members of the Mormon Battalion: A Sesquicentennial Remembrance | Birth, Marriage and Death Records | | 665 |
| Members of the Willie and Martin Handcart Companies of 1856 | Birth, Marriage and Death Records | | 1,106 |
| Membership of The Church of Jesus Christ of Latter-day Saints 1830-1848 | Birth, Marriage and Death Records | | 112,820 |
| Memoir and Letters of Charles Sumner, Volume 1 | Miscellaneous Records and Reference | | 6,631 |
| Memoir and Letters of Charles Sumner, Volume 2 | Miscellaneous Records and Reference | | 8,130 |
| Memoir and Letters of Charles Sumner, Volume 4 | Miscellaneous Records and Reference | | 10,647 |
| Memoir and Letters of Frederic Dan Huntington | Birth, Marriage and Death Records | | 10,165 |
| Memoir and Select Writings of William Reed Prince | Miscellaneous Records and Reference | | 776 |
| Memoir Concerning the French Settlement and French Settlers in the Colony of Rhode Island | Birth, Marriage and Death Records | | 4,666 |
| Memoir of Abner Kingman Nott, Late Pastor of the First Baptist Church in the City of New York | Miscellaneous Records and Reference | | 1,296 |
| Memoir of Ann H. Judson, Missionary to Burmah | Birth, Marriage and Death Records | | 7,454 |
| Memoir of Charles Callahan Perkins | Miscellaneous Records and Reference | | 189 |
| Memoir of Colonel John Allan, An Officer of the Revolution, Born in Edinburgh Castle, Scotland, January 3 1746, Died in Lubec, Maine, February 7 1805 | Social, Regional and General History | | 1,749 |
| Memoir of George Barrell Emerson, LL. D. | Birth, Marriage and Death Records | | |
| Memoir of George Livermore | Social, Regional and General History | | 2,867 |
| Memoir of Henry Armitt Brown | Social, Regional and General History | | 28,675 |
| Memoir of Hon. Levi Lincoln: Prepared Agreeably to a Resolution of the Massachusetts Historical Society | Social, Regional and General History | | 185 |
| Memoir of Increase Sumner, Governor of Massachusetts | Social, Regional and General History | | 1,926 |
| Memoir of James Brainerd Taylor | Social, Regional and General History | | 2,483 |
| Memoir of Jared Sparks, LLD. | Birth, Marriage and Death Records | | 1,602 |
| Memoir of John Codman, D. D | Miscellaneous Records and Reference | | 1,347 |
| Memoir of John Codman, D.D. | Miscellaneous Records and Reference | | 5,132 |
| Memoir of John Whitman and His Descendants | Social, Regional and General History | | 2,852 |
| Memoir of Jonathan French | Birth, Marriage and Death Records | | 807 |
| Memoir of Joseph Peabody of Salem, Massachusetts | Miscellaneous Records and Reference | | 156 |
| Memoir of Joshua Treat: the Pioneer Settler on Penobscot River | Social, Regional and General History | | 793 |
| Memoir of Major Jason Torrey, of Bethany, Wayne County, Pennsylvania | Social, Regional and General History | | 8,244 |
| Memoir of Mary L. Ware, Wife of Henry Ware, Jr. | Miscellaneous Records and Reference | | 1,254 |
| Memoir of Mrs. Edward Livingston, with Letters Hitherto Unpublished | Miscellaneous Records and Reference | | 1,208 |
| Memoir of Mrs. Harriet L. Winslow, Thirteen Years a Member of the American Mission in Ceylon | Social, Regional and General History | | 941 |
| Memoir of Mrs. Martha Barnes | Birth, Marriage and Death Records | | 322 |
| Memoir of Mrs. Mary E. Van Lennep | Social, Regional and General History | | 1,134 |
| Memoir of Mrs. Sarah L. Huntington Smith, Late of the American Mission in Syria | Social, Regional and General History | | 1,452 |
| Memoir of Rachel Hicks | Miscellaneous Records and Reference | | 852 |
| Memoir of Rev. Charles T. Torrey Who Died in the Penitentiary of Maryland | Social, Regional and General History | | 2,537 |
| Memoir of Rev. Daniel Holbrook Gillette of Mobile, Alabama | Social, Regional and General History | | 1,104 |
| Memoir of Rev. David Tappan | Social, Regional and General History | | 2,236 |
| Memoir of Rev. Erskine J. Hawes | Birth, Marriage and Death Records | | 4,344 |
| Memoir of Rev. Geo. W. Bethune, D.D. | Miscellaneous Records and Reference | | 10,840 |
| Memoir of Rev. John Moore | Miscellaneous Records and Reference | | 1,694 |
| Memoir of Rev. Samuel Whiting, D.D. and of his Wife, Elizabeth St. John with References to Some of Their English Ancestors Ancestors and American Descendants | Social, Regional and General History | | 14,524 |
| Memoir of Richard Marvin Strong, a Member of the Albany Bar | Birth, Marriage and Death Records | | 656 |
| Memoir of Roger Brooke Taney, LL. D., Chief Justice of the Supreme Court of the United States | Social, Regional and General History | | 3,280 |
| Memoir of Roger Williams, the Founder of the State of Rhode Island | Social, Regional and General History | | 4,888 |
| Memoir of Royal Adams Keith of Grafton, Massachusetts and Genealogy of His Family, 1809 - 1934 | Birth, Marriage and Death Records | | 516 |
| Memoir of Royal Keith, Together with the Annals of the Keith Family of Scotland | Birth, Marriage and Death Records | | 1,019 |
| Memoir of Rufus Ellis | Miscellaneous Records and Reference | | 6,732 |
| Memoir of Samuel Joseph May | Miscellaneous Records and Reference | | 2,174 |
| Memoir of the Farrar Family | Social, Regional and General History | | 3,944 |
| Memoir of the Gibbs Family of Warwickshire, England | Social, Regional and General History | | 2,958 |
| Memoir of the Le Fanu Family | Social, Regional and General History | | 5,681 |
| Memoir of the Life and Character of Rev. Asahel Nettleton, D. D. | Miscellaneous Records and Reference | | 1,231 |
| Memoir of the Life and Character of Samuel Hopkins, D.D. | Miscellaneous Records and Reference | | 10,268 |
| Memoir of the Life and Public Services of John Charles Fremont | Birth, Marriage and Death Records | | 10,370 |
| Memoir of the Life and Writings of Rev. Jonathan Mayhew, D. D., Pastor of the West Church and Society in Boston, From June, 1747, To July, 1766 | Social, Regional and General History | | 3,404 |
| Memoir of the Life of Alexander Viets Grisdwold, D. D. | Social, Regional and General History | | 14,936 |
| Memoir of the Life of Jeremiah Evarts, Esq. | Birth, Marriage and Death Records | | 10,444 |
| Memoir of the LIfe of John Quincy Adams | Birth, Marriage and Death Records | | 23,126 |
| Memoir of the Life of the Right Reverend William White, D.D., Bishop of the Protestant Episcopal Church of the State of Pennsylvania | Social, Regional and General History | | 2,444 |
| Memoir of the Rev. Elias Cornelius | Miscellaneous Records and Reference | | 1,550 |
| Memoir of the Rev. Gregory T. Bedell, D.D. | Miscellaneous Records and Reference | | 7,962 |
| Memoir of the Rev. John Stanford, D.D., Late Chaplain To the Humane and Criminal Institutions in the City of New-York | Social, Regional and General History | | 2,494 |
| Memoir of the Rev. Oliver Alden Taylor | Miscellaneous Records and Reference | | 2,125 |
| Memoir of the Rev. Samuel Green, Late Pastor of Union Church, Boston | Social, Regional and General History | | 1,645 |
| Memoir of the Rev. William Robinson: Formerly Pastor of the Congregational Church in Southington, Connecticut | Miscellaneous Records and Reference | | 3,197 |
| Memoir of Theophilus Parsons, Chief Justice of the Supreme Judicial Court of Massachusetts | Miscellaneous Records and Reference | | 2,771 |
| Memoir of William Ellery Channing, Volume 1 | Miscellaneous Records and Reference | | 7,521 |
| Memoir of William Ellery Channing, Volume 2 | Miscellaneous Records and Reference | | 8,088 |
| Memoir of William Ellery Channing, Volume 3 | Miscellaneous Records and Reference | | 9,117 |
| Memoir of William Francis Bartlett | Miscellaneous Records and Reference | | 802 |
| Memoir of William Henry Channing | Miscellaneous Records and Reference | | 17,024 |
| Memoir, Correspondence and Miscellanies from the Papers of Thomas Jefferson, Volume 1 | Miscellaneous Records and Reference | | 12,635 |
| Memoir: Charles Follen Folsom | Birth, Marriage and Death Records | | 1,463 |
| Memoirs (Charles Godfrey Leland) | Miscellaneous Records and Reference | | 3,511 |
| Memoirs and Correspondence of Francis Horner, M.P. | Social, Regional and General History | | 11,284 |
| Memoirs and Letters of Charles Sumner, Volume 3 | Miscellaneous Records and Reference | | 11,533 |
| Memoirs and Letters of Dolly Madison | Miscellaneous Records and Reference | | 1,214 |
| Memoirs and Letters of James Kent | Miscellaneous Records and Reference | | 3,514 |
| Memoirs of a Huguenot Family | Birth, Marriage and Death Records | | 2,665 |
| Memoirs of an American Lady With Sketches of Manners and Scenes in America as They Existed Previous to the Revolution by Mrs. Anne Grant | Birth, Marriage and Death Records | | 9,654 |
| Memoirs of Eliphalet Nott, D. D., Ll., D., For Sixty-Two Years President of Union College | Miscellaneous Records and Reference | | 1,434 |
| Memoirs of Francis Atwater | Social, Regional and General History | | 12,147 |
| Memoirs of Gen. Thomas Francis Meagher | Miscellaneous Records and Reference | | 6,636 |
| Memoirs of Henry Villard, Journalist and Financier, 1835 - 1900, Volume 1 | Miscellaneous Records and Reference | | 3,193 |
| Memoirs of Henry Villard, Journalist and Financier, 1835 - 1900, Volume 2 | Miscellaneous Records and Reference | | 3,860 |
| Memoirs of James Gordon Bennett and his Times | Miscellaneous Records and Reference | | 1,834 |
| Memoirs of John Adams Dix, Volume 1 | Birth, Marriage and Death Records | | 9,777 |
| Memoirs of John Adams Dix, Volume 2 | Birth, Marriage and Death Records | | 11,185 |
| Memoirs of John Quincy Adams | Birth, Marriage and Death Records | | 36,563 |
| Memoirs of Lieut.-General Scott, Ll. D., Volume 2 | Miscellaneous Records and Reference | | 2,623 |
| Memoirs of Lieut.-General Scott, LL.D. Written By Himself | Social, Regional and General History | | 4,324 |
| Memoirs of Lieut.-General Scott, LL.D., Volume 1 | Miscellaneous Records and Reference | | 1,967 |
| Memoirs of Margaret Fuller Ossoli | Miscellaneous Records and Reference | | 787 |
| Memoirs of Mrs. Hawkes | Miscellaneous Records and Reference | | 15,393 |
| Memoirs of Philip P. Bliss | Miscellaneous Records and Reference | | 22,148 |
| Memoirs of Pliny Earle, M.D. | Birth, Marriage and Death Records | | |
| Memoirs of Rev. Joseph Buckminster, D.D. and of his Son Joseph Stevens Buckminster | Social, Regional and General History | | 36,330 |
| Memoirs of the Ancient Earls of Warren and Surrey, and Their Descendants to the Present Time | Social, Regional and General History | | 36,784 |
| Memoirs of the Early Pioneer Settlers of Ohio: with Narratives of Incidents and Occurrences in 1775 | Social, Regional and General History | | 4,670 |
| Memoirs of the House of Hewetson or Hewson of Ireland | Social, Regional and General History | | 16,556 |
| Memoirs of the Life and Gospel Labours of Stephen Grellet | Miscellaneous Records and Reference | | 22,985 |
| Memoirs of the Life and Ministry of the Rev. John Summerfield, A.M. | Social, Regional and General History | | 1,995 |
| Memoirs of the Life and Writings of Lindley Murray | Social, Regional and General History | | 627 |
| Memoirs of the Life of David Rittenhouse, Lld. F.R.S., Late President of the American Philosophical Society | Miscellaneous Records and Reference | | 3,627 |
| Memoirs of the Life of Nathaniel Stacy, Preacher of the Gospel of Universal Grace | Social, Regional and General History | | 3,040 |
| Memoirs of the Life of William Wirt, Volume 1 | Social, Regional and General History | | 2,939 |
| Memoirs of the Life of William Wirt, Volume 2 | Social, Regional and General History | | 2,696 |
| Memoirs of the Rev. J. Lewis Diman, D.D. | Birth, Marriage and Death Records | | 5,720 |
| Memoirs of the Rev. Nicholas Murray, D.D. (Kirwan.) By Samuel Iren?¶Us Prime | Social, Regional and General History | | 2,597 |
| Memoirs of the Rev. Noah Worcester, D. D | Social, Regional and General History | | 745 |
| Memoirs of the Rev. Samuel J. Mills, Late Missionary To the South Western Section of the United States | Social, Regional and General History | | 1,115 |
| Memoirs of the Staker Wallace, with Genealogy of Family | Social, Regional and General History | | 862 |
| Memoirs of the Wilkinson Family in America | Social, Regional and General History | | 38,584 |
| Memoranda Concerning Some Branches of the Hawkins Family and Connections | Social, Regional and General History | | 9,630 |
| Memoranda of Some of the Descendants of Richard Dana | Birth, Marriage and Death Records | | 4,197 |
| Memoranda Relating To the Ancestry and Family of Hon. Levi Parsons Morton Vice-President of the United States, 1889 - 1893 | Miscellaneous Records and Reference | | 6,237 |
| Memoranda Relating to the Ancestry and Family of Sophia Fidelia Hall | Social, Regional and General History | | 11,746 |
| Memoranda Relating to the Lane, Reyner and Whipple Families, Yorkshire and Massachusetts | Social, Regional and General History | | 2,010 |
| Memoria Historica sobre la Familia Alvarez de Toledo en Chile | Social, Regional and General History | | 10,054 |
| Memorial : Genealogical, Historical, and Biographical, of Solomon Leonard, 1637, of Duxbury and Bridgewater | Social, Regional and General History | | 40,204 |
| Memorial Addreses on the Life and Character of Frank G. Clarke | Social, Regional and General History | | 2,818 |
| Memorial Addresses for the Life and Services of Marcus Claiborne Lisle | Birth, Marriage and Death Records | | 2,008 |
| Memorial Addresses of the Life and Character of Julian Hartridge, a Representative from Georgia | Miscellaneous Records and Reference | | 1,465 |
| Memorial Addresses of the Life and Character of William A. Buckingham, February 27th and March 1st, 1875 | Birth, Marriage and Death Records | | 2,419 |
| Memorial Addresses of the Life and Character of William Mutchler | Social, Regional and General History | | 3,479 |
| Memorial Addresses on the Life and Character of Ambrose E. Burnside, a Senator from Rhode Island | Birth, Marriage and Death Records | | 8,135 |
| Memorial Addresses On the Life and Character of Ambrose E. Burnside, a Senator From Rhode Island, Volume 3 | Miscellaneous Records and Reference | | 2,283 |
| Memorial Addresses on the Life and Character of Ashley B. Wright, January 8 - February 18, 1898 | Social, Regional and General History | | 284 |
| Memorial Addresses on the Life and Character of Beverly B. Douglas, a Representative from Virginia | Birth, Marriage and Death Records | | 937 |
| Memorial Addresses on the Life and Character of Charles Q. Tirrell | Birth, Marriage and Death Records | | 2,461 |
| Memorial Addresses On the Life and Character of Charles Sumner, a Senator of Massachusetts | Social, Regional and General History | | 574 |
| Memorial Addresses on the Life and Character of David Johnson Foster | Birth, Marriage and Death Records | | 2,437 |
| Memorial Addresses On the Life and Character of David Wilber, a Representative From New York | Social, Regional and General History | | 217 |
| Memorial Addresses on the Life and Character of Edward W. Robertson, a Representative from the State of Louisiana | Social, Regional and General History | | 374 |
| Memorial Addresses On the Life and Character of Francis Browne Stockbridge (Late A Senator From Michigan) Delivered in the Senate and House of Representatives, Fifty-Third Congress, Third Session | Social, Regional and General History | | 363 |
| Memorial Addresses on the Life and Character of Garret A. Hobart, Late Vice-President of the United States | Miscellaneous Records and Reference | | 2,659 |
| Memorial Addresses On the Life and Character of Godlove S. Orth, a Representative From Indiana | Miscellaneous Records and Reference | | 307 |
| Memorial Addresses on the Life and Character of Henry Bowen Anthony, a Senator from Rhode Island, 1815 - 1884 | Social, Regional and General History | | 4,588 |
| Memorial Addresses on the Life and Character of Henry H. Starkweather, a Representative from Connecticut | Birth, Marriage and Death Records | | 423 |
| Memorial Addresses on the Life and Character of James Gillespie Blaine of Augusta, Maine | Birth, Marriage and Death Records | | 1,914 |
| Memorial Addresses on the Life and Character of John Arnot, February 8, 1887 | Birth, Marriage and Death Records | | 1,747 |
| Memorial Addresses On the Life and Character of John Edwards Leonard, a Representative From Louisiana | Miscellaneous Records and Reference | | 2,639 |
| Memorial Addresses on the Life and Character of John Simpkins, Late a Representative from Massachusetts | Miscellaneous Records and Reference | | 361 |
| Memorial Addresses on the Life and Character of Lewis Beach | Birth, Marriage and Death Records | | 786 |
| Memorial Addresses On the Life and Character of Lewis F. Watson, a Representative From Pennsylvania | Social, Regional and General History | | 4,551 |
| Memorial Addresses on the Life and Character of Lewis V. Bogy | Birth, Marriage and Death Records | | 3,966 |
| Memorial Addresses on the Life and Character of Lewis V. Bogy, a Senator from Missouri, January 16, 1875 | Social, Regional and General History | | 4,415 |
| Memorial Addresses On the Life and Character of Matthew H. Carpenter, a Senator From Wisconsin | Miscellaneous Records and Reference | | 653 |
| Memorial Addresses on the Life and Character of Matthew H. Carpenter, January 26, 1862 | Miscellaneous Records and Reference | | 2,539 |
| Memorial Addresses on the Life and Character of Melbourne H. Ford, April 9, 1892 - February 4, 1893 | Birth, Marriage and Death Records | | 1,763 |
| Memorial Addresses on the Life and Character of Nelson Dingley, Late a Representative from Maine | Birth, Marriage and Death Records | | 6,691 |
| Memorial Addresses on the Life and Character of Robert E. Burke, Late a Representative from Texas | Birth, Marriage and Death Records | | 2,104 |
| Memorial Addresses on the Life and Character of Rush Clark | Birth, Marriage and Death Records | | 2,104 |
| Memorial Addresses on the Life and Character of Thomas A. Hendricks, Vice-President of the United States | Miscellaneous Records and Reference | | 3,038 |
| Memorial Addresses on the Life and Character of Thomas H. Herndon, a Representative from Alabama | Miscellaneous Records and Reference | | 1,362 |
| Memorial Addresses on the Life and Character of Walter P. Brownlow | Birth, Marriage and Death Records | | 2,690 |
| Memorial Addresses on the Life and Character of William Cogswell, Late a Representative from Massachusetts | Birth, Marriage and Death Records | | 4,240 |
| Memorial Addresses On the Life and Character of William D. Kelley, A Representative From Pennsylvania | Miscellaneous Records and Reference | | 823 |
| Memorial Addresses On the Life and Character of William H. F. Lee, a Representative From Virginia | Social, Regional and General History | | 695 |
| Memorial Addresses on the Life and Character of William Pierce Frye | Birth, Marriage and Death Records | | 4,563 |
| Memorial Addresses upon the Life and Character of Hon. Joseph H. Earle | Birth, Marriage and Death Records | | 4,791 |
| Memorial Addresses: Life and Character of Godlove S. Orth, December 18th, 1882 | Birth, Marriage and Death Records | | 3,215 |
| Memorial and Family History of Erie County, New York, Volume 1 | Social, Regional and General History | | 50,906 |
| Memorial Edition Talks on Teaching (Francis Wayland Parker) | Miscellaneous Records and Reference | | 335 |
| Memorial Inscriptions in the Churchyard of Ratray | Birth, Marriage and Death Records | | 1,567 |
| Memorial of Alexander Lyman Holley, July 20, 1832 - January 29, 1882 | Miscellaneous Records and Reference | | 5,426 |
| Memorial of Alvan Pinney Hyde, March 10, 1825 - February 5, 1894 | Social, Regional and General History | | 290 |
| Memorial of Captain Thomas Abbey, His Ancestors and Descendants | Social, Regional and General History | | 7,840 |
| Memorial of Captain Thomas Abbey, His Ancestors and Descendants. | Birth, Marriage and Death Records | | 6,083 |
| Memorial of David L. Dodge | Birth, Marriage and Death Records | | |
| Memorial of Elder Ebenezer Lamson of Concord, Massachusetts: His Ancestry and Descendants, 1634 - 1908 | Social, Regional and General History | | 7,018 |
| Memorial of Eliza Butler Thompson | Social, Regional and General History | | 619 |
| Memorial of Elizabeth Elnora Randall McCollester | Miscellaneous Records and Reference | | 1,321 |
| Memorial of Frederick S. Huntington | Social, Regional and General History | | 629 |
| Memorial of Henry Wolcott, One of the First Settlers of Windsor, Connecticut and of Some of His Descendants | Social, Regional and General History | | 27,259 |
| Memorial of Horatio Rogers | Birth, Marriage and Death Records | | 880 |
| Memorial of Israel Martin Bullock, M. W. Grand Master of the Grand Lodge of Connecticut, A. F. and A. M., 1844 - 1879 | Social, Regional and General History | | 2,868 |
| Memorial of J. H. Bisbee | Social, Regional and General History | | 3,230 |
| Memorial of James Thompson of Charlestown, Massachusetts, 1630 - 1682 | Social, Regional and General History | | 18,945 |
| Memorial of John Allan | Birth, Marriage and Death Records | | 2,035 |
| Memorial of Joseph and Lucy Clark Allen | Social, Regional and General History | | 12,048 |
| Memorial of Josiah Kendall One of the First Settler of Sterling, Massachusetts and Some of His Ancestors and Some of his Decendants | Birth, Marriage and Death Records | | 7,926 |
| Memorial of Loren Pinckney Waldo, February 2, 1802 - September 8, 1881 | Miscellaneous Records and Reference | | 173 |
| Memorial of Mary Francis, 1803 - 1884 and William Boardman, 1805 - 1887 | Miscellaneous Records and Reference | | 2,647 |
| Memorial of Mary Francis, November 6, 1803 - December 14, 1884 and William Boardman, February 25, 1805 - November 3,1887 | Birth, Marriage and Death Records | | 2,238 |
| Memorial of Onslow Stearns, Concord, New Hampshire | Social, Regional and General History | | 131 |
| Memorial of Samuel Appleton of Ipswich Massachusetts | Social, Regional and General History | | 9,393 |
| Memorial of Samuel Mills Capron, Born May 15, 1832.--Died Jan. 4Th, 1874 | Miscellaneous Records and Reference | | 352 |
| Memorial of Samuel Mills Capron, May 19, 1832 - January 4, 1874 | Miscellaneous Records and Reference | | 1,716 |
| Memorial of Samuel Whitney Hale, Keene, New Hampshire, April 2, 1822 - October 16, 1891 | Miscellaneous Records and Reference | | 415 |
| Memorial of the De Forsyths de Fronsac | Miscellaneous Records and Reference | | 2,258 |
| Memorial of the Descendants of the Honorable John Alden | Social, Regional and General History | | 11,620 |
| Memorial of the Family Forsyth de Fronsac | Social, Regional and General History | | 5,312 |
| Memorial of the Family of Morse: Compiled From the Original Records For the Hon. Asa Porter Morse | Social, Regional and General History | | 14,412 |
| Memorial of the Inauguration of the Status of Franklin | Birth, Marriage and Death Records | | 10,661 |
| Memorial of the Late Honorable David S. Jones | Social, Regional and General History | | 788 |
| Memorial of the Morses | Miscellaneous Records and Reference | | 15,678 |
| Memorial of the Reverend George Putnam | Miscellaneous Records and Reference | | 210 |
| Memorial of the Thayer Name, From the Massachusetts Colony of Weymouth and Braintree, Embracing Geneological and Biographical Sketches of Richard & Thomas Thayer, and Their Descendants From 1636 To 1874 | Miscellaneous Records and Reference | | 34,361 |
| Memorial of the Thayer Name, from the Massachusetts Colony of Weymouth and Braintree, Embracing Geneological[sic] and Biographical Sketches of Richard & Thomas Thayer, and Their Descendants | Social, Regional and General History | | 57,210 |
| Memorial of the Walkers of the Old Plymouth Colony | Miscellaneous Records and Reference | | 14,231 |
| Memorial of the Walkers of the Old Plymouth Colony, Embracing Genealogical and Biographical Sketches of James, of Taunton | Social, Regional and General History | | 28,263 |
| Memorial of the Whitcomb and Pierce Families | Social, Regional and General History | | 1,324 |
| Memorial of the Whittlesey Family in the United States | Social, Regional and General History | | 6,405 |
| Memorial of Thomas C. T. Buckley | Social, Regional and General History | | 963 |
| Memorial of Thomas Potts, Junior, Who Settled in Pennsylvania | Miscellaneous Records and Reference | | 11,373 |
| Memorial of Uriel Crocker, 13 September 1796 - 19 July 1887 | Miscellaneous Records and Reference | | 2,705 |
| Memorial of William E. Dodge | Birth, Marriage and Death Records | | |
| Memorial Services in Honor of Mrs. Mary Hemenway | Miscellaneous Records and Reference | | 775 |
| Memorial Sketch of Lafayette S. Foster, United States Senator From Connecticut, and Active Vice-President of the United States | Birth, Marriage and Death Records | | 2,434 |
| Memorial Sketch of Lucy Webb Hayes | Miscellaneous Records and Reference | | 311 |
| Memorial Sketches of Rev. George B. Atwell | Social, Regional and General History | | 8,452 |
| Memorial Souvenir Commemorating the 150th Anniversary of York as the Capital of the United States of America, 1777 - 1778 | Miscellaneous Records and Reference | | 3,683 |
| Memorial Volume: Leo N. Levi. I.O.B.B | Miscellaneous Records and Reference | | 890 |
| Memorial: Dr. James M. Sturdevant | Miscellaneous Records and Reference | | 268 |
| Memorials of an Ancient House: A History of the Family of Lister or Lyster | Social, Regional and General History | | 36,778 |
| Memorials of Elder John White: One of the First Settlers of Hartford, Connecticut, and of His Descendants | Social, Regional and General History | | 11,815 |
| Memorials of Emily Bliss Gould of Rome | Birth, Marriage and Death Records | | 5,879 |
| Memorials of Families of the Surname of Archer | Social, Regional and General History | | 4,780 |
| Memorials of Horatio Balch Hackett | Miscellaneous Records and Reference | | 5,789 |
| Memorials of John Bartram and Humphry Marshall | Birth, Marriage and Death Records | | 40,733 |
| Memorials of Mary Wilder White: A Century Ago in New England | Social, Regional and General History | | 2,162 |
| Memorials of the Chaunceys, including President Chauncy his Ancestors and Descendants | Social, Regional and General History | | 23,582 |
| Memorials of the Danvers Family | Social, Regional and General History | | 43,329 |
| Memorials of the Dead in Boston, King's Chapel Burial Ground | Birth, Marriage and Death Records | | 7,380 |
| Memorials of the Duttons of Dutton in Cheshire with Notes Respecting the Sherborne Branch of the Family | Social, Regional and General History | | 22,335 |
| Memorials of the Earl of Stirling and of the House of Alexander | Social, Regional and General History | | 34,527 |
| Memorials of the Family of Wemyss of Wemyss, Volume 1 | Social, Regional and General History | | 85,709 |
| Memorials of the Goldesborough Family | Social, Regional and General History | | 26,570 |
| Memorials of the Hilles Family: More Particularly of Samuel and Margaret Hill Hilles of Wilmington, Delaware | Social, Regional and General History | | 18,865 |
| Memorials of the Huguenots in America | Birth, Marriage and Death Records | | 16,497 |
| Memorials of the Life of Edward & Lydia Ann Jackson. with Discourses Preached in the Centenary Church, Hamilton, On the Occasion of Their Death | Social, Regional and General History | | 302 |
| Memorials of the Mauran Family | Miscellaneous Records and Reference | | 1,915 |
| Memorials of the Wesley Family: Biographical and Historical Sketches of all the Members of the Family for Two Hundred and Fifty Years | Social, Regional and General History | | 45,542 |
| Memorials: Being A Genealogical, Biographical and Historical Account of the Name of Mudge in America, From 1638 To 1868 | Miscellaneous Records and Reference | | 10,143 |
| Memorials: Elder John White, One of The First Settlers of Hartford, Connecticut | Social, Regional and General History | | 20,832 |
| Memories of a Great Schoolmaster (Dr. Henry A. Coit) | Miscellaneous Records and Reference | | 932 |
| Memories of a Hundred Years: Edward Everett Hale, Volume 1 | Social, Regional and General History | | 5,417 |
| Memories of a Hundred Years: Edward Everett Hale, Volume 2 | Social, Regional and General History | | 5,760 |
| Memories of a Rear Admiral by S. R. Franklin | Birth, Marriage and Death Records | | 8,214 |
| Memories of Fifty Years (Lester Wallack) | Miscellaneous Records and Reference | | 2,206 |
| Memories of Hawthorne | Miscellaneous Records and Reference | | 10,807 |
| Memories of Jane Cunningham Croly """"""""Jenny June"""""""" | Miscellaneous Records and Reference | | |
| Memories of Old Cahaba | Miscellaneous Records and Reference | | 7,442 |
| Memories of Old Friends: The Journals and Letters of Caroline Fox of Penjerrick, Cornwall, 1835 -1871 | Social, Regional and General History | | 11,091 |
| Memories of Rufus Choate | Miscellaneous Records and Reference | | 8,007 |
| Memories of the Arbuthnots of Kincardineshire and Aberdeenshire | Social, Regional and General History | | 41,599 |
| Memories of the Professional and Social Life of John E. Owens | Miscellaneous Records and Reference | | 2,823 |
| Memories of Youth and Manhood (Sidney Willard), Volume 1 | Birth, Marriage and Death Records | | 2,273 |
| Memories of Youth and Manhood (Sidney Willard), Volume 2 | Birth, Marriage and Death Records | | 3,081 |
| Memories, 1792 - 1872, a Sketch of the Life of Lauretta Jewett Hutchinson | Birth, Marriage and Death Records | | 1,173 |
| Memories, Grave and Gay: Florence Howe Hall | Social, Regional and General History | | 7,617 |
| Men and Measures of Half A Century: Sketches and Comments | Miscellaneous Records and Reference | | 4,769 |
| Men of Mark and Representative Citizens of Harrisonburg and Rockingham County, Virginia | Social, Regional and General History | | 20,665 |
| Mendocino Dispatch Democrat (Ukiah, California) | Newspapers and Periodicals | | 691,158 |
| Mendocino Herald (Ukiah, California) | Newspapers and Periodicals | | 74,427 |
| Merchant Taylors' School Register, 1871 - 1900 | Directories and Lists | | 55,370 |
| Merchiston Castle School Register, 1833 - 1903 | Directories and Lists | | 15,256 |
| Mercury, The (Weimar,Texas) | Newspapers and Periodicals | | 57,780 |
| Meredith, New Hampshire: Annals and Genealogies | Miscellaneous Records and Reference | | 46,771 |
| Merion in the Welsh Tract: With Sketches of the Townships of Haverford and Radnor, 1682 | Social, Regional and General History | | 14,122 |
| Meriwether Lewis and William Clarke: Pioneers of the Great American Northwest | Miscellaneous Records and Reference | | 1,128 |
| Mesa County, Colorado Inheritance Tax, 1920-1934 | Court, Land, and Probate Records | | |
| Mesa County, Colorado Probate, 1883-1900 | Court, Land, and Probate Records | | 281 |
| Messenger (Beckley, West Virginia) | Newspapers and Periodicals | | 78,480 |
| Methodist Episcopal Church, Saratoga County Circuit, Class Book of Rev.Mitchel B. Bull, 1810 | Directories and Lists | | 961 |
| Methuen Historical Society Publications: Opening Address, No. 1 | Miscellaneous Records and Reference | | 1,007 |
| Mexia Daily News, The (Mexia,Texas) | Newspapers and Periodicals | | 149,529 |
| Mexia Daily Telegram (Mexia,Texas) | Newspapers and Periodicals | | 494 |
| Mexia Evening Ledger (Mexia,Texas) | Newspapers and Periodicals | | 51,301 |
| Mexia Evening News (Mexia,Texas) | Newspapers and Periodicals | | 685,549 |
| Mexia Evening News, The (Mexia,Texas) | Newspapers and Periodicals | | 17,802 |
| Mexia Weekly Herald (Mexia,Texas) | Newspapers and Periodicals | | 2,548 |
| Mexia Weekly Herald, The (Mexia,Texas) | Newspapers and Periodicals | | 65,452 |
| Mexican Herald (México D.F., Mexico) | Newspapers and Periodicals | | 1 |
| Mexican Herald (Mexico D.F., , Mexico) | Newspapers and Periodicals | | 9,952,351 |
| Mexican Standard Commercial, Mining, Agriculture and Railway (Mexico D.F., , Mexico) | Newspapers and Periodicals | | 12,962 |
| Mexico y Europa (General, , Mexico) | Newspapers and Periodicals | | 13,437 |
| Miami Helmet, The (Piqua,Ohio) | Newspapers and Periodicals | | 202,164 |
| Micah Whitney, Revolutionary Soldier and His Twelve Children Settled Early in Phillips, Maine | Social, Regional and General History | | 2,717 |
| Michael Anthon and Anne Shields-Lambing their Ancestors and Their Descendants | Social, Regional and General History | | 2,822 |
| Michael Brown's New Jersey Newspaper Indexes | Birth, Marriage and Death Records | | 14,197 |
| Michael DeBolt and his Decendants | Family Trees | | 913 |
| Michael Hillegas and His Descendants | Social, Regional and General History | | 5,648 |
| Michigan 1930 US Census Index | Census and Voter Lists | | 4,698,188 |
| Michigan Descendants of Isaac Phinney, Jr., and Huldah Phinney of Cazenovia, New York | Social, Regional and General History | | 4,894 |
| Michigan History, French Occupation, 1634 - 1760 | Miscellaneous Records and Reference | | 1,072 |
| Michigan in the War | Military Subjects | | 62,112 |
| Michigan Military Records: The D.A.R. of Michigan Historical Collections (Free until 30 Nov 2009) | Military Subjects | | 5,006 |
| Middle Tennessee's Forgotten Children: Apprentices from 1784 to 1902 | Social, Regional and General History | | 28,959 |
| Middlesex Journal (London,United Kingdom) | Newspapers and Periodicals | | 9,914 |
| Middlesex Pedigrees, as collected by Richard Mundy | Birth, Marriage and Death Records | | 11,647 |
| Middlesex, Virginia Daniel Descendants | Social, Regional and General History | | 21,064 |
| Middletown and Portland Directory, 1887 - 1888 | Birth, Marriage and Death Records | | 363 |
| Middletown and Portland Directory, 1888 - 1889 | Birth, Marriage and Death Records | | 686 |
| Middletown and Portland Directory, 1889 - 1890 | Birth, Marriage and Death Records | | 621 |
| Middletown and Portland Directory, 1891 - 1892 | Birth, Marriage and Death Records | | 742 |
| Middletown and Portland Directory, 1893 - 1894 | Birth, Marriage and Death Records | | 876 |
| Middletown and Portland Directory, 1894 - 1895 | Birth, Marriage and Death Records | | 572 |
| Middletown and Portland Directory, 1895 - 1896 | Birth, Marriage and Death Records | | 985 |
| Middletown and Portland Directory, 1896 - 1897 | Birth, Marriage and Death Records | | 938 |
| Middletown: A Biography | Miscellaneous Records and Reference | | 14,686 |
| Middletown's Days and Deeds: The Story of 150 Years of Living in an Old Kentucky Town | Miscellaneous Records and Reference | | 19,008 |
| Midland High School Review 1932 (Year Book) | Directories and Lists | | 1,306 |
| Migration to South Carolina: Movement from New England and Mid-Atlantic States, 1850 Census | Immigration Records | | 4,200 |
| Miles Genealogy | Social, Regional and General History | | 1,450 |
| Miles Merwin, 1772 - 1859 | Social, Regional and General History | | 3,632 |
| Miles Standish, the Puritan Captain | Miscellaneous Records and Reference | | 1,738 |
| Milford Mail (Milford, Iowa) | Newspapers and Periodicals | | 24,795 |
| Military and Genealogical Records of the Famous Indian Woman, Nancy Ward | Social, Regional and General History | | 20,328 |
| Military History of Ulysses S. Grant, April 1861 - April 1865, Volume 1 | Birth, Marriage and Death Records | | 18,113 |
| Military History of Wayne County, N.Y. the County in the Civil War. | Military Subjects | | 68,553 |
| Military Pension Files Ancestors of Nancy Lee Watson Roney American Wars | Birth, Marriage and Death Records | | 751 |
| Militia Attestations Index, 1886 - 1910 | Military Subjects | | 86,081 |
| Militia Attestations Index, Royal Garrison Artillery, 1872 - 1915 | Military Subjects | | 12,567 |
| Mills County Journal (Glenwood,Iowa) | Newspapers and Periodicals | | 4,190 |
| Mills County Republican (Malvern,Iowa) | Newspapers and Periodicals | | 21,122 |
| Mills County Tribune (Glenwood,Iowa) | Newspapers and Periodicals | | 361,823 |
| Milwaukee Daily News (Milwaukee,Wisconsin) | Newspapers and Periodicals | | 901 |
| Milwaukee Daily News, The (Milwaukee,Wisconsin) | Newspapers and Periodicals | | 97,228 |
| Milwaukee News, The (Milwaukee,Wisconsin) | Newspapers and Periodicals | | 12,159 |
| Mineral County, Colorado Pensions, 1935-1936 | Directories and Lists | | 24 |
| Miners' Union Bulletin (Fairbanks, Alaska) | Newspapers and Periodicals | | 5,268 |
| Minnesota 1930 US Census Index | Census and Voter Lists | | 1,593,705 |
| Minnesota in the Civil and Indian Wars, 1861 - 1865 | Miscellaneous Records and Reference | | 73,813 |
| Minutes of the Court of Albany, NY | Court, Land, and Probate Records | | 7,837 |
| Minutes of the Court of Fort Orange and Beverwyck, 1652 - 1656 | Birth, Marriage and Death Records | | 47,984 |
| Minutes of the Court of Fort Orange and Beverwyck, 1652 - 1656, Volume I (Free until 30 Nov 2009) | Miscellaneous Records and Reference | | 47,984 |
| Mirror (London,United Kingdom) | Newspapers and Periodicals | | 157 |
| Miscellaneous Notes, Pedigrees, Etc. Relating to Persons of the Surname Bull | Social, Regional and General History | | 7,067 |
| Miscellanies Relating to Lancashire and Cheshire, Volume 3 | Social, Regional and General History | | 10,038 |
| Miss Emelia Smith, May 31, 1832 - January 27, 1899 | Birth, Marriage and Death Records | | 444 |
| Missing Relatives and Lost Friends | Social, Regional and General History | | 23,349 |
| Mission 2000 | Birth, Marriage and Death Records | | 28,828 |
| Mississippi 1930 US Census Index | Census and Voter Lists | | 1,898,276 |
| Mississippi Court Records, 1799 - 1835 | Court, Land, and Probate Records | | 17,553 |
| Mississippi Territory in the War of 1812 | Military Subjects | | 15,107 |
| Missouri 1930 US Census Index | Census and Voter Lists | | 3,265,418 |
| Missouri Marriages Before 1840 | Birth, Marriage and Death Records | | 41,854 |
| Moberly Daily Index (Moberly, Missouri) | Newspapers and Periodicals | | 1,304 |
| Moberly Daily Monitor (Moberly, Missouri) | Newspapers and Periodicals | | 643,943 |
| Moberly Daily Monitor-Index (Moberly, Missouri) | Newspapers and Periodicals | | 353 |
| Moberly Democrat (Moberly, Missouri) | Newspapers and Periodicals | | 17,122 |
| Moberly Evening Democrat (Moberly, Missouri) | Newspapers and Periodicals | | 81,970 |
| Moberly Monitor (Moberly, Missouri) | Newspapers and Periodicals | | 1,792 |
| Moberly Monitor-Index (Moberly, Missouri) | Newspapers and Periodicals | | 348,151 |
| Moberly Morning Monitor (Moberly,Missouri) | Newspapers and Periodicals | | 32,975 |
| Moberly Semi-Weekly Monitor (Moberly, Missouri) | Newspapers and Periodicals | | 2,137 |
| Moberly Weekly Democrat (Moberly, Missouri) | Newspapers and Periodicals | | 178,082 |
| Moberly Weekly Monitor (Moberly, Missouri) | Newspapers and Periodicals | | 762,572 |
| Moffat County, Colorado Inheritance Tax, 1920-1943 | Court, Land, and Probate Records | | 234 |
| Moffat Genealogies: Descent From Rev. John Moffat of Ulster County, New York | Social, Regional and General History | | 6,101 |
| Moggill Cemetery (Brisbane) Monumental Inscriptions | Birth, Marriage and Death Records | | 100 |
| Moir Genealogy and Collateral Lines, with Historical Notes | Social, Regional and General History | | 22,061 |
| Monitor (London,United Kingdom) | Newspapers and Periodicals | | 146 |
| Monitor Or British Freeholder (London,United Kingdom) | Newspapers and Periodicals | | 652 |
| Monroe County, New York, Abstracts of Wills 1821 - 1841 | Court, Land, and Probate Records | | 9,552 |
| Montana 1930 US Census Index | Census and Voter Lists | | 506,530 |
| Montana Standard (Butte,Montana) | Newspapers and Periodicals | | 309 |
| Montana: Its Story and Biography, Volume 1 | Miscellaneous Records and Reference | | 354,991 |
| Montgomery County, Kentucky Deeds, Volume 2, 1797 - 1804 | Birth, Marriage and Death Records | | 4,395 |
| Montgomery County, Kentucky Wills & Administrations, Volume 5, 1817 - 1819 | Birth, Marriage and Death Records | | 6,565 |
| Montgomery County, Tennessee County Court Minutes, December 1805 - December 1807 | Birth, Marriage and Death Records | | 7,671 |
| Montgomery County, Tennessee Deeds, Volume 4, 1805 - 1809 | Birth, Marriage and Death Records | | 4,893 |
| Montgomery County, Tennessee Deeds, Volume 5, 1808 - 1812 | Birth, Marriage and Death Records | | 4,822 |
| Montgomery County, Tennessee Wills & Administrations, Volume 1, 1796 - 1804 | Court, Land, and Probate Records | | 5,158 |
| Montgomery County, Tennessee Wills & Administrations, Volume 10, October 1824 - January 1826 | Court, Land, and Probate Records | | 4,510 |
| Montgomery County, Tennessee Wills & Administrations, Volume 2, 1805 - 1814 | Court, Land, and Probate Records | | 5,479 |
| Montgomery County, Tennessee Wills & Administrations, Volume 4, 1814 - 1817 | Court, Land, and Probate Records | | 5,035 |
| Montgomery County, Tennessee Wills & Administrations, Volume 6, 1819 - 1821 | Birth, Marriage and Death Records | | 4,827 |
| Montgomery County, Tennessee Wills & Administrations, Volume 7, October 1821 - January 1823 | Birth, Marriage and Death Records | | 4,421 |
| Montgomery County, Tennessee Wills & Administrations, Volume 8, January 1823 - October 1823 | Court, Land, and Probate Records | | 5,126 |
| Montgomery County, Tennessee Wills & Administrations, Volume 9, October 1823 - October 1824 | Court, Land, and Probate Records | | 4,176 |
| Montgomery County, Tennessee, Deeds, Volume 1, 1796 - 1800 | Court, Land, and Probate Records | | 4,939 |
| Montgomery County, Tennessee, Marriage Records, Brides, 1858 - 1869, Volume 2 | Birth, Marriage and Death Records | | 134 |
| Montgomery County, Tennessee, Marriage Records, Grooms, Volume 1 | Birth, Marriage and Death Records | | 1,819 |
| Montgomery County, Tennessee, Marriage Records, Volume 2 | Birth, Marriage and Death Records | | 2,436 |
| Montreal Herald (Montreal, Quebec, Canada) | Newspapers and Periodicals | | 2,899,958 |
| Montreal Transcript (Montreal, Quebec, Canada) | Newspapers and Periodicals | | 422,026 |
| Montreal: St. Vincent de Paul, 1868 - 1977 | Birth, Marriage and Death Records | | 50,073 |
| Monument To the Memory of General Andrew Jackson: Containing Twenty-Five Eulogies and Sermons Delivered On Occasion of His Death | Birth, Marriage and Death Records | | 11,166 |
| Monumental Inscriptions in the Graveyards of Brigham and Bridekirk, Near Cockermouth in the county of Cumberland, 1666 - 1876 | Birth, Marriage and Death Records | | 4,607 |
| Mooar (Moors) Genealogy: Abraham Mooar of Andover and his Descendants | Social, Regional and General History | | 2,565 |
| Moravian Records | Immigration Records | | |
| More Battlefields of Canada | Military Subjects | | 8,704 |
| More Than Conqueror: Memorials of Col. J. Howard Kitching | Miscellaneous Records and Reference | | 1,108 |
| More Toronto Sketches: The Way We Were | Social, Regional and General History | | 4,028 |
| Moreton Bay Miscellaneous Records 1855-1859 | Court, Land, and Probate Records | | 4,314 |
| Moreton Bay Supreme Court Records, 1857-1859 | Court, Land, and Probate Records | | 7,758 |
| Morgan County, Colorado Pensions, 1933-1936 | Directories and Lists | | 380 |
| Morning Chronicle (London,United Kingdom) | Newspapers and Periodicals | | 43,120 |
| Morning Chronicle And London Advertiser (London,United Kingdom) | Newspapers and Periodicals | | 17,511 |
| Morning Democrat (Moberly, Missouri) | Newspapers and Periodicals | | 896 |
| Morning Freeman (Saint John, New Brunswick, Canada) | Newspapers and Periodicals | | 1,188,694 |
| Morning Herald (Hagerstown, Maryland) | Newspapers and Periodicals | | 469,659 |
| Morning Herald, The (Uniontown,Pennsylvania) | Newspapers and Periodicals | | 2,889 |
| Morning Monitor (Moberly, Missouri) | Newspapers and Periodicals | | 107,437 |
| Morning News (Des Moines, Iowa) | Newspapers and Periodicals | | 778 |
| Morning Post and Daily Advertiser (London,United Kingdom) | Newspapers and Periodicals | | 36,530 |
| Morning Record, The (Traverse City,Michigan) | Newspapers and Periodicals | | 29,543 |
| Morning Republican (Xenia, Ohio) | Newspapers and Periodicals | | 1,306 |
| Morning Republican, The (Mitchell,South Dakota) | Newspapers and Periodicals | | 26,482 |
| Morrill Kindred in America | Social, Regional and General History | | 4,233 |
| Morris & Co.'s Commercial Directory and Gazetteer of Ashton-Under-Lyne and District, 1874 | Birth, Marriage and Death Records | | 59,137 |
| Morristown, New Jersey, in the Spanish - American War, | Social, Regional and General History | | 3,915 |
| Moses Brown, his Life and Services | Birth, Marriage and Death Records | | 875 |
| Moses Coit Tyler, 1835 - 1900 | Miscellaneous Records and Reference | | 3,601 |
| Moses Vail of Huntington, Long Island | Social, Regional and General History | | 33,223 |
| Mount Pleasant Cemetery, Second Edition | Court, Land, and Probate Records | | 9,923 |
| Mountain Ear (Conway, New Hampshire, USA) | Newspapers and Periodicals | | 83,063 |
| Mountain Sun, The (Kerrville,Texas) | Newspapers and Periodicals | | 6,031 |
| Moving Finger of Jasper | Miscellaneous Records and Reference | | 13,072 |
| Mower Genealogy, 1690 - 1897 | Social, Regional and General History | | 346 |
| Mr. Dunn Browne's Experiences in the Army | Miscellaneous Records and Reference | | 781 |
| Mt Cotton Cemeteries Monumental Inscriptions | Birth, Marriage and Death Records | | 180 |
| Mundale, the West Parish of Westfield, Massachusetts in the Olden Days | Social, Regional and General History | | 2,240 |
| Munro's Western Isles of Scotland and Genealogies of the Clans, 1549 | Social, Regional and General History | | 2,523 |
| Murderous Minds on Trial: Terrible Tales from a Forensic Psychiatrist's Casebook | Social, Regional and General History | | 3,782 |
| Muscatine Journal (Muscatine,Iowa) | Newspapers and Periodicals | | 46,227 |
| Muskogee and Northeastern Oklahoma | Miscellaneous Records and Reference | | 101,808 |
| Muster Rolls of New York Provincial Troops, 1755 - 1764 (Free until 30 Nov 2009) | Military Subjects | | 41,738 |
| Muster Rolls of the Soldiers of the War of 1812: Detached from the Militia of North Carolina in 1812 and 1814 | Military Subjects | | 10,477 |
| Muster Rolls of the Soldiers of the War of 1812: Detached from the Militia of North Carolina in 1812 and 1814 | Military Subjects | | 33,371 |
| My Ancestors (DeLong) | Social, Regional and General History | | 8,345 |
| My Ancestors Being the History of the Digby & Strutt Families | Other Topics | | 11,742 |
| My Ancestors: A Memorial of John Paine and Mary Ann May of East Woodstock, Connecticut | Social, Regional and General History | | 7,977 |
| My Autobiography and Reminiscences, Volume 2 | Miscellaneous Records and Reference | | 9,052 |
| My Autobiography by S.S. Mcclure | Social, Regional and General History | | 1,584 |
| My Beloved Poilus."""""""" These Home Letters From an American Girl | Social, Regional and General History | | 273 |
| My Brother, Theodore Roosevelt | Social, Regional and General History | | 3,322 |
| My Campaigns in America-A Journal Kept by Count William De Deux-Ponts 1780-1781 | Miscellaneous Records and Reference | | 187 |
| My Children's Ancestors and Kinfolk | Family Trees | | 10,635 |
| My Children's Ancestors: Roselle Theodore Cross and his Wife Emma Asenath (Bridgman) Cross | Social, Regional and General History | | 12,122 |
| My Crystal Ball: Reminiscences (Elisabeth Marbury) | Miscellaneous Records and Reference | | 1,928 |
| My Father's Family: Douglas - Haden, Churchill - Blakey - George, Perkins - Oglesby - Attkisson, and Allied Families | Social, Regional and General History | | 5,664 |
| My Garden of Memory: An Autobiography, Kate Douglas Wiggin | Social, Regional and General History | | 4,154 |
| My Generation by Sarah Anna Emery | Social, Regional and General History | | |
| My Grandmother's Stories: Stories of Huntington, Long Island and Vicinity During the Revolutionary War and After | Birth, Marriage and Death Records | | 3,931 |
| My Heritage: A Collection of Authenticated Biographical Sketches of the Author's Ancestors Dating From the Thirty Years' War (1618 - 1648) and Continuing in Unbroken Sequence To the Date of Publication 1947 | Social, Regional and General History | | 7,289 |
| My Life and Times (Cyrus Hamlin) | Miscellaneous Records and Reference | | 2,431 |
| My Life and Work by Henry Ford | Social, Regional and General History | | 5,790 |
| My Life in Many States and in Foreign Lands, Dictated in My Seventy-Fourth Year (George Francis Train) | Social, Regional and General History | | 2,283 |
| My Long Life: An Autobiographical Sketch by Mary Cowden-Clarke | Social, Regional and General History | | 15,361 |
| My Lorraine Journal (Edith O'Shaughnessy) | Miscellaneous Records and Reference | | 616 |
| My Mark Twain (Samuel Clemens): Reminiscences and Critisms | Social, Regional and General History | | 6,854 |
| My Musical Life by Walter Damrosch | Miscellaneous Records and Reference | | 7,209 |
| My Neck of the Woods : The Lewis Families of Southeastern North Carolina and Northeastern South Carolina | Social, Regional and General History | | 46,554 |
| My Neck of the Woods: The Lewis Families of Southeastern North Carolina and Northeastern South Carolina | Social, Regional and General History | | 66,612 |
| My People of the Plains | Miscellaneous Records and Reference | | 788 |
| My Reminiscences (Raphael Pumpelly), Volume 2 | Social, Regional and General History | | 2,585 |
| My Reminiscences, Volume 1 | Miscellaneous Records and Reference | | 1,301 |
| My Second Life: Living with Parkinson's Disease (Bill Harshaw) | Social, Regional and General History | | 2,941 |
| My Story of the War: A Woman's Narrative of Four Years Personal Experience As Nurse in the Union Army | Miscellaneous Records and Reference | | 2,617 |
| My Threescore Years and Ten: Thomas Ball | Birth, Marriage and Death Records | | 7,738 |
| My Virginia Kin: Comprising the Hamlett, Witt, Giles, Wills, Eubank-Fortune, Mullenix, Lynchard, Talbot, and Kight Families; With a Short Treatise on the Loving Family | Social, Regional and General History | | 19,221 |
| My Year Before the Mast (Annette Brock Davis) | Social, Regional and General History | | 3,024 |
| Myles Standish (1871) | Social, Regional and General History | | 727 |
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