- Anthony Ware, Miscellaneous Papers, 1773/18861
- Archibald Stuart Ledgers, 1757/18522
- Archibald Stuart Papers, 1790/18162
- Archibald Woods Papers, 1777/1846, bulk 1783/184611
- Aretas Brooks Fleming (1839-1923) Papers, 1784/19241
- Aretas Brooks Fleming Papers, 1784/19241
- Arithmetic Notebook, I, 1780/18201
- Armistead Papers, 1736/18971
- Armistead-Cocke Papers, 1680/191725
- Armstead L. Robinson papers, 1848/2001, bulk 1967/19921
- Ashcraft Family Genealogy, 1732/19721
- Association for the Preservation of Virginia Antiquities, Montgomery County Branch Papers, 1754/1996, bulk 1958/19832
- Augusta County and Bath County, Virginia, Receipts, 1780/18482
- Augustine Smith Papers, 1787/17931
- Aurora, Preston County Papers, 1754/19001