- "Scenes from Behind the Wall: Images of East Germany, 1989/90" exhibit collection, 1989/20121
- A. E. Dick Howard papers, 1928/20171
- A. Patrick L. Prest, Jr. papers, 1941/20141
- Academic Affairs: Academic Program Reviews, 1976/2018, bulk 1992/20181
- Across the Way Productions, Inc.,
2002-20161
- Admiral Thomas J. Lopez Papers, 1973/20141
- Alan Clarke Railroad Research Papers, 1861/20121
- Alejandro Rodríguez Fornés (Alucho) collection, 2014/20191
- Alexandria Library Board Records (MS416), 1937/20202
- Alexandria Library Records (MS098), 1937/20131
- Allan Blank Papers, 1958/20092
- Alleghany Chapter, National Society of the Daughters of the American Revolution Records,, 1890/20224
- Alpha Phi Alpha Kappa Pi chapter records, 1972/20112
- Alpha Sigma Alpha Collection, 1933/20181
- Alumni Association Records, 1833/2014, bulk 1950/20051