- Alexander Haight family collection, 1764/197611
- Alexander Haight family collection, 1764/197711
- Alexander Hamilton, Jr. Letters, 1832/18331
- Alexander M. Davis Papers, 1850/18921
- Alexander McNutt Glasgow Family Papers, 1823/190314
- Alexander Sterrett Paxton Papers, 1858/1959, bulk 1861/18651
- Alexandria History Collection (MS240), 1767/200810
- Alexandria Office of Sheriff Jail Records (MS054), 1891/19481
- Alexandria Scrapbook Collection (MS003), 1830/18931
- Alleghany Chapter, National Society of the Daughters of the American Revolution Records, 1890/20222
- Allen Family Papers, 1766/193329
- Allen-Johnson Family Papers, 1838/19471
- Almanac collection, 1850/19091
- Alumni Association Records, 1833/2014, bulk 1950/20054
- Alumni Association Records, 1950/20071