- 398th United States Army Air Force Bombardment Squadron Collection, 1944/19453
- A. Edwin Kendrew Papers, 1930/19591
- A. H. Hand Papers, 1835/20092
- A. Willis Robertson Papers, 1921/1988, bulk 1946/1966386
- Adam Empie Papers, 1811/2004, bulk 1811/18503
- Adele Blow Chatfield-Taylor family papers, 1899/197729
- African American Family Photo Album, 1940/19502
- African American Family Photographs, 1880/19605
- African American Soldiers in World War II, 19451
- Agnes Dawson letters, 1941/19462
- Albert E. Garrett, Jr. scrapbook, 1927/19741
- Alexander Kallos Papers, 1939/19596
- Alfred R. Armstrong Papers, 1928/19761
- Allen-Kean-Laurence family letters, 1837/19602
- Allied Women of World War II collection, 1939/19452