- A Calendar of The Jefferson Papers of the University of Virginia1
- A. E. Dick Howard papers, 1928/20171
- A. Willis Robertson Papers, 1921/1988, bulk 1946/19661
- A.C.L. Gatewood Papers, 1801/19191
- A.J. Morrison Collection, 1754/19751
- AEOC Society Minute Book, 1832/18372
- Aaron Harmon Collection (MS249), 1815/18361
- Abner Johnson Leavenworth Papers, 1825/18612
- Abraham Davenport Ledger, 1804/18332
- Abraham Grove Account Book, 1815/18502
- Account Book, Richmond, Virginia, 1824/18361
- Account Books, 1782/18951
- Ackerly Family Papers2
- Adam Empie Papers, 1811/2004, bulk 1811/18502
- Adam Empie letters, 1833/18372