- A. J. Davis Family Collection, 1874/2007, bulk 1874/19071
- Adelaide Colcock Papers, 1863/18702
- Adin B. Underwood Papers,, 1861/19262
- Aileen B. Cowardin Friendship Book,, 1863/18702
- Alexander Farish Robertson Papers, 1867/19314
- Alexander McNutt Glasgow Family Papers, 1823/19038
- Alexander Von Humboldt Portrait Print, 1855/18901
- Andrew Given Family Correspondence, 1859/18862
- Andrew Johnson Check, 18682
- Ann A. Hertzler Collection, 1863/2013, bulk 1974/20002
- Anna Burton Ellett Collection, 1751/19321
- Antoine Gaujot and Julien E. Gaujot Papers, 1840/19992
- Association for the Preservation of Virginia Antiquities, Montgomery County Branch Papers, 1754/1996, bulk 1958/19831
- August Dietz Civil War Collection,, 1862/19093
- Augustus Smith Family Collection, 1864/19262