- A Sense of Place: A Portfolio of Hampden-Sydney Photographs, 1993/19962
- A. Christian Compton Papers, 1960/19991
- A. E. Dick Howard papers, 1928/2017100
- A. H. Hand Papers, 1835/20092
- A. J. Davis Family Collection, 1874/2007, bulk 1874/19071
- A. Jane Duncombe Architectural Papers, 1952/20026
- A. Patrick L. Prest, Jr. papers, 1941/20147
- A. Willis Robertson Papers, 1921/1988, bulk 1946/19661
- ALIVE (ALexandrians InVolved Ecumenically) Records (MS300), 1969/199511
- Abbye A. Gorin Architectural Collection, 1940/2006, bulk 1995/20062
- Abraham Anson papers, 1939/200522
- Abraham's Table manuscript, 1983/20121
- Academic Affairs: Academic Program Reviews, 1976/2018, bulk 1992/20185
- Academic Departments - Record Group 92
- Adagio Press Collection, 1957/19935