| Revised Register of the Soldiers and Sailors of New Hampshire in the War of the Rebellion, 1861 - 1866 | Military Records | 374,541 |
| Descendants of Richard Waterhouse of Portsmouth, New Hampshire | Family History and Biography | 200,378 |
| History of Rockingham and Strafford Counties, New Hampshire | Local and General History | 156,156 |
| Genealogical Dictionary of Maine and New Hampshire | Miscellaneous | 142,535 |
| History of Rockingham And Strafford Counties, New Hampshire (1882) | Local and General History | 114,665 |
| Genealogical Dictionary of Maine and New Hampshire | Birth, Marriage and Death | 91,731 |
| Gazetteer of Grafton County, New Hampshire, 1709-1886 Updated | Historical Maps and Gazetteers | 89,795 |
| History of the Town of Hampton, New Hampshire, from its Settlement in 1638 to the Autumn of 1892 | Newspapers and Periodicals | 88,308 |
| Genealogical And Family History of the State of New Hampshire, Volume 4 Updated | Family History and Biography | 87,673 |
| Genealogical And Family History of the State of New Hampshire, Volume 3 Updated | Family History and Biography | 83,794 |
| Plymouth, New Hampshire Families | Local and General History | 79,351 |
| Genealogical And Family History of the State of New Hampshire, Volume 2 Updated | Family History and Biography | 78,095 |
| Genealogical And Family History of the State of New Hampshire, Volume 1 Updated | Family History and Biography | 73,338 |
| History of Weare, New Hampshire, 1735-1888 Updated | Local and General History | 71,667 |
| History of Dublin, New Hampshire Updated | Local and General History | 59,571 |
| The Vital Records of Kingston, New Hampshire 1694 - 1994 | Birth, Marriage and Death | 58,789 |
| History of Hancock, New Hampshire, 1764-1889 Updated | Local and General History | 58,683 |
| Meredith, New Hampshire: Annals And Genealogies (1932) Updated | Family History and Biography | 55,283 |
| History of the Town of Andover, New Hampshire, 1751-1906 Updated | Local and General History | 54,212 |
| History And Genealogy of Captain John Locke [1627-1796] of Portsmouth And Rye, New Hampshire (1916) | Local and General History | 52,225 |
| History And Genealogy of Captain John Locke (1627-1696) of Portsmouth And Rye, New Hampshire, And His Descendants (1916) | Family History and Biography | 52,032 |
| History of the Town of Rindge, New Hampshire, From the Date of the Rowley Canada or Massachusetts Charter to the Present Time, 1736 - 1874, with a Genealogical Register of the Rindge Families | Miscellaneous | 51,592 |
| History of the Town of New London, Merrimack County, New Hampshire, 1779-1899 Updated | Local and General History | 49,702 |
| History of Littleton, New Hampshire, Volume 3 (1905) | Local and General History | 49,156 |
| Documents Relating to Towns in New Hampshire, Gilmanton - New Ipswich | Local and General History | 47,038 |
