- "Scenes from Behind the Wall: Images of East Germany, 1989/90" exhibit collection, 1989/20123
- "Smart" Road Citizen's Advisory Committee Records, 1993/19973
- 1x1 Japan Exhibition Materials, 1965-2024, 20244
- A. E. Dick Howard papers, 1928/201770
- A. H. Hand Papers, 1835/20091
- A. Jane Duncombe Architectural Papers, 1952/20021
- A. Patrick L. Prest, Jr. papers, 1941/20147
- A. Willis Robertson Papers, 1921/1988, bulk 1946/19661
- ALIVE (ALexandrians InVolved Ecumenically) Records (MS300), 1969/19955
- Abbye A. Gorin Architectural Collection, 1940/2006, bulk 1995/20061
- Abraham Anson papers, 1939/200518
- Academic Affairs: Academic Program Reviews, 1976/2018, bulk 1992/20183
- Academic Departments - Record Group 92
- Adagio Press Collection, 1957/19932
- Adam Empie Papers, 1811/2004, bulk 1811/18501