- A. J. Davis Family Collection, 1874/2007, bulk 1874/19075
- Adam Finch Collection, 1891/19331
- Adam T. Finch Papers, 1895/19261
- Adin B. Underwood Papers,, 1861/19261
- Alan Campbell Cameron Papers, 1914/19221
- Albert L. Sturm Papers, 1904/19881
- Alexander Farish Robertson Papers, 1867/193120
- Alexander W. Brown Diaries, 1904/19211
- Alleghany Chapter, National Society of the Daughters of the American Revolution Records,, 1890/20225
- Ambrose L. Snavely Papers, 1903/19522
- Ann Eve Moss Papers, 1920/19901
- Anne H. Price Yates Papers, 1904/1985, bulk 1975/19851
- Anne Price Yates Papers II, 1898/20051
- Antoine Gaujot and Julien E. Gaujot Papers, 1840/19993
- Arthur B. Massey Papers, 1902/19612