- A. J. Davis Family Collection, 1874/2007, bulk 1874/19077
- Aaron Family Collection, 1908/19271
- Adam Finch Collection, 1891/19332
- Adam T. Finch Papers, 1895/19262
- Adin B. Underwood Papers,, 1861/19262
- African-American Tenant Farmer Photographs, Clarksville, Virginia, 1920/19302
- Agricultural Extension Service Records, 1914/19801
- Al Gross Papers, 1909/20002
- Albert L. Sturm Papers, 1904/19885
- Alexander Farish Robertson Papers, 1867/193124
- Alfred C. Payne Collection, 1917/20034
- Alfred W. Lawson Collection, 1913/19481
- Alleghany Chapter, National Society of the Daughters of the American Revolution Records,, 1890/202211
- Ambrose L. Snavely Papers, 1903/19525
- American Locomotive Company/Baldwin Locomotive Works Illustrations, 1900/19251