- Allen Family Papers, 1766/19332
- Ancella Bickley, Historian, Research Papers regarding African-Americans, 1775/2018, bulk 1970/20114
- Anderson Family papers, 1755/19583
- Andrew Lindamood papers, 1768/18172
- Anna Burton Ellett Collection, 1751/19325
- Anne Atkinson Chamberlayne Collection., 1742/19631
- Anthony Ware, Miscellaneous Papers, 1773/18861
- Archibald Stuart Ledgers, 1757/18521
- Archibald Woods Papers, 1777/1846, bulk 1783/18462
- Arithmetic Notebook, I, 1780/18201
- Armistead Papers, 1736/18971
- Armistead-Cocke Papers, 1680/19178
- 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