- Anderson Family papers, 1755/19581
- Andrew C. L. Gatewood papers, 1860/19931
- Ann Smith Academy Papers, 1807/19101
- Anne T. Chapman Papers, 1884/19541
- Anson Du Puy Van Buren letters, 1863/19971
- Armistead Boothe Papers (MS164), 1803/19901
- Armistead-Cocke Papers, 1680/19171
- Arthur George Williams Scrapbooks, 1905/19351
- Association for the Preservation of Virginia Antiquities, Colonial Capitol Branch Records, 1896/19891
- Augustus C. Golding Papers, 1859/1934, bulk 1862/18641
- Austin-Twyman Papers, 1765/19391
- Baer Family Papers, 1744/19291
- Baird Family Papers, 1656/1922, bulk 1656/18481
- Baker Family Papers, 1805/19111
- Barron Family Papers, 1793/19421