- Alderman family papers, 1779/19611
- Alexander Brown Papers (I), 1815/19101
- Alexander Brown Papers (II), 1748/19001
- Alexander Haight family collection, 1764/19761
- Alexander Hugh Holmes Stuart Account Books, 1837/18571
- Alexander Lockhart Nelson papers, 1848/19021
- Alexander M. Davis Papers, 1850/18921
- Alexander McNutt Glasgow Family Papers, 1823/19031
- Alexander Von Humboldt Portrait Print, 1855/18901
- Alexander, Fultz, and Willson Families Collection, 1770/19701
- Alexandria Gazette Ledgers (MS026), 1833/18661
- Alexandria History Collection (MS240), 1767/20081
- Alexandria Library Company Records (MS002), 1794/20071
- Alexandria Scrapbook Collection (MS003), 1830/18931
- Alexandria, Virginia City Records (MS019), 1750/1983, bulk 1825/18751