Collection
- Harriet Hodges commonplace book, [19th century]1
- Hart Hosley exercise and commonplace book, 1835-18391
- Helen Buchanan papers, 1906-1937 (majority within 1906-1919)1
- Helen Eastman correspondence, 19431
- Hemenway family collection, 1819-1927 (majority within 1828-1881)1
- Henry Brevoort Eddy letters, 18951
- Henry Dickinson collection, 1799-18061
- Henry Hulton, Sketches, 1773-17751
- Henry J. McCance notebook, 1849-18511
- Henry Newman family papers, 1777-18721
- Henry and Ruth Dyer collection, 1841-18731
- Hillard-Low family papers, 1817-1935 (majority within 1829-1897)1
- Hilon A. Parker family papers, 1825-1953 (majority within 1853-1911)1
- Hoit family papers, 1803-1918 (majority within 1803-1873)1
- Holme family account book, 1684-17621
- Holstein family account and commonplace book, 1753-1831 (majority within 1753-1759)1
- Horace Holley papers, 1802-1827 (majority within 1818)1
- Hoyt family book, 1762-18821
- Hubbard family letters, 1809-1884 (majority within 1846-1862)1
- Huntington family scrapbook, 1763-18931