Collection
- Elmer Neill sketchbook, 1893-18961
- Emily Hockaday Blair collection, 1888-18941
- Emily Howland papers, 1849-1974 (majority within 1850s-1920s)1
- Everleigh Ehrmann, Jr. letters, 1943-1944 (majority within 1944)1
- Ewing family papers, 1773-1937 (majority within 1773-1866)1
- Frank Perkins letters, 1904-19061
- French Creek and Cherry Run Oil Company collection, 1865-1867 (majority within 1865)1
- G.A. Rooke log book, 1891-18931
- Gallwitz collection, 1805-[1864]1
- George Anson letters, 1789-17951
- George W. and William F. Gragg collection, 1853-1864 (majority within 1862-1864)1
- Gilbert L. Thompson papers, 1842-18721
- Haiti collection, 1761-1826, 1856, 1895, 19541
- Hasbrouck family papers, 1784-1940 (majority within 1805-1882)1
- Henry Benton Austin collection, [1861]-18621
- Hiram B. Crosby journal, 18721
- Horace Mann, Jr. papers, 1864-1868 (majority within 1864)1
- Horace Miner collection, 1941-1992 (majority within 1941-1945)1
- John Claude letters, 1814-18151
- John Hughes letter book, 1826-18301