Collection
- Charles F. Tew papers, 1837-19051
- Charles Fowler collection, 1854-18571
- Charles H. Foster collection, 1898-19671
- Charles Henry Eaton and Herbert Williams Eaton Horse Tour account book, 1893-18941
- Charles S. May papers, 1849-19041
- Chillicothe (Ohio) daybook, 17991
- Construction account books, 1891-19091
- Corporation of the City of New York collection, 1798-1873 (majority within 1806-1865)1
- Crittenden family papers, 1837-1907 (majority within 1849-1889)1
- Cushing family collection, 1790-1934 (majority within 1828-1928)1
- Daniel H. London papers, 1839-19101
- Daniel Hewett diary, 1861, 1863 (majority within 1861)1
- David Baldwin papers, 1754-1870 (majority within 1790-1868)1
- Dennis Skehan tavern account book, 1765-17721
- Dwight Dewey papers, 1810-18751
- Eaton-Shirley family papers, 1790-1939 (majority within 1850-1906)1
- Ebenezer Eaton ledger, 1790-18091
- Ebenezer Ricker collection, 1767-18051
- Edward H. Thomson papers, 1826-1924 (majority within 1836-1885)1
- Eighteenth-Century Wine-Growing collection, 1782-17831