- Armstead L. Robinson papers, 1848/2001, bulk 1967/19924
- Arnold Sundgaard papers, 1925/198816
- Arthur "Bud" Metheny Papers, 1930/19913
- Arthur E. Scott photograph collection4
- Arthur E. Scott photograph collection, 1910/19764
- Arthur J. Winder Collection, 1962/19751
- Arthur Jacknowitz Faculty Papers, 1954/20194
- Arthur M. Squires Papers, 1888/1987, bulk 1940/19874
- Arthur Peterson papers1
- Asa Orin Bishop Papers, 1910/19905
- Assistant/Associate Dean records - University of Virginia School of Law, 1953/19885
- Association for Women in Architecture Records, 1928/19922
- Association for the Preservation of Virginia Antiquities, Colonial Capitol Branch Records, 1896/19891
- Association for the Preservation of Virginia Antiquities, Montgomery County Branch Papers, 1754/1996, bulk 1958/19837
- Association for the Preservation of Virginia Antiquities, Yorktown Branch Records, 1921/2013, bulk 1975/20052