Collection
- Brasee-Scofield family papers, 1819-1950 (majority within 1819-1874)1
- Chapman family papers, 1870-1904 (majority within 1896-1904)1
- Charles Cogswell papers, 1869-1921 (majority within 1869-1899)1
- Charles H. Foster collection, 1898-19671
- Charles H. Lund collection, 1870-18871
- Charles H. Townsend papers, 1849-18701
- Christopher Van Deventer papers, 1799-19251
- City of Glasgow (Steamship) collection, 1850-18521
- Clarke family papers, 1823-1929 (majority within 1851-1912)1
- Cole family papers, 1799-1959 (majority within 1821-1931)1
- Constantin family papers, 1800-1829 (majority within 1806-1809)1
- Continental, Confederation, and United States Congress collection, 1751-1902 (majority within 1761-1862)1
- Corporation of the City of New York collection, 1798-1873 (majority within 1806-1865)1
- Cozzens House Hotel collection, 1866-18681
- Cushing family collection, 1790-1934 (majority within 1828-1928)1
- Dall family papers, 1824-1911, 1942 (majority within 1824-1911)1
- Davenport-Kingsbury family collection, 1853-1885 (majority within 1853-1858, 1861-1880)1
- David McCreary receipts, 1837-1931 (majority within 1837-1862)1
- David P. Gerberich family account book and recipe book, 1840-18881
- Dunlap legal papers, 1797-18201