- 17th and 18th century British periodicals, 1600/18001
- A Calendar of The Jefferson Papers of the University of Virginia8
- A. E. Dick Howard papers, 1928/20171
- A.J. Morrison Collection, 1754/19751
- Alexander Brown Papers (II), 1748/19001
- Alexander Haight family collection, 1764/19763
- Alexander Haight family collection, 1764/19773
- Alexander, Fultz, and Willson Families Collection, 1770/19701
- Alexandria History Collection (MS240), 1767/20087
- Alexandria, Virginia City Records (MS019), 1750/1983, bulk 1825/18751
- Allen Family Papers, 1766/19332
- Anderson Family papers, 1755/19582
- Andrew Lindamood papers, 1768/18172
- Anna Burton Ellett Collection, 1751/19325
- Anne Atkinson Chamberlayne Collection., 1742/19631