- Andrew Steele Fulton Account Books, 1825/18342
- Anna Maria Hickman Otis Mead Chalmers family papers, 1821/18975
- Archibald Woods Papers, 1777/1846, bulk 1783/184665
- Armistead Boothe Papers (MS164), 1803/19905
- Armstead L. Robinson papers, 1848/2001, bulk 1967/19921
- Arthur I. Boreman Papers, 1830/19496
- Atkeson-Morgan Family Papers, 1833/1923, bulk 1850/19006
- Aubrey E. Strode papers, 1861/19691
- Augusta County and Bath County, Virginia, Receipts,, 1780/18481
- Austin-Twyman Papers, 1765/193922
- Ayres Papers, 1833/18551
- B. G. D. Moxley Account Book, 1829/18351
- Baird Family Papers, 1656/1922, bulk 1656/18485
- Baker Family Papers, 1805/19111
- Bank of Rockbridge Currency and Lexington Lottery Ticket collection, 1803/18621