- "An Alarm to the frequenters of Plays, wrote by a Religious Person" handwritten broadside, 17741
- 17th and 18th century British periodicals, 1600/18001
- A.J. Morrison Collection, 1754/19751
- Alexander Brown Papers (II), 1748/19001
- Alexander Haight family collection, 1764/19761
- Alexander Haight family collection, 1764/19771
- Alexander, Fultz, and Willson Families Collection, 1770/19701
- Alexandria History Collection (MS240), 1767/20081
- Alexandria, Virginia City Records (MS019), 1750/1983, bulk 1825/18751
- Allen Family Papers, 1766/19331
- Anderson Family papers, 1755/19581
- Andrew Lindamood papers, 1768/18171
- Anna Burton Ellett Collection, 1751/19321
- Anne Atkinson Chamberlayne Collection., 1742/19631
- Anthony Ware, Miscellaneous Papers, 1773/18861