Collection
- Francis W. Edmonds papers, 1780-1917 (majority within 1825-1863)3
- George T. and Harriet Stevens papers, 1850-19203
- Gordon family papers, 1853-1883 (majority within 1861-1862)3
- Hamilton-Schuyler family papers, 1820-1924 (majority within 1820-1877)3
- Handy family papers, 1670s-1980s3
- Heinrich Spaeth papers, [1862]-1949 (majority within 1910-1915)3
- Helen M. Noye Hoyt papers, 1863-1925 (majority within 1863-1864)3
- Hilon A. Parker family papers, 1825-1953 (majority within 1853-1911)3
- Hopkins family papers, ca. 1800-19323
- Hussey-Wadsworth family papers, 1830-19453
- Letters, Documents, & Other Manuscripts, Duane Norman Diedrich collection, 1595-2007 (majority within 1719-1945)3
- Letters, Documents, & Sermons, Blandina Diedrich collection, 1652-1967 (majority within 1726-1886)3
- Mackay and Vansittart family collection, 1838-1891 (majority within 1862-1891)3
- Mark A. Anderson Collection of Post-Mortem Photography, 1840s-1970s (majority within 1840s-1920s)3
- Morgan family papers, 1834-19133
- Puffer-Markham family papers, 1794-1910 (majority within 1860-1879)3
- Revolutionary Cuba and Philippines collection, 1849-1925 (majority within 1895-1903)3
- Rufus Degranza Pease papers, 1844-18903
- Samuel D. Bates family papers, 1841-1910 (majority within 1850-1899)3
- Samuel Harvey papers, 1784-1888 (majority within 1800-1849)3