- A. E. Dick Howard papers, 1928/20176
- A. H. Hand Papers, 1835/20091
- A. J. Gustin Priest papers, 1919/19763
- A. Patrick L. Prest, Jr. papers, 1941/201411
- A. Rufus Tonelson Papers, 1922/197510
- A. S. Lara papers, 1856/18611
- A. Willis Robertson Papers, 1921/1988, bulk 1946/19661,103
- A.E.S. Stephens Papers, 1949/19615
- Abbye A. Gorin Architectural Collection, 1940/2006, bulk 1995/20061
- Abraham Anson papers, 1939/200526
- Academic Departments - Record Group 92
- Ackerly Family Papers1
- Adagio Press Collection, 1957/19932
- Adalbert J. Volck Collection of Etchings, 1861/19793
- Adam Empie Papers, 1811/2004, bulk 1811/18502