- Alexander Haight family collection, 1764/19767
- Alexander Haight family collection, 1764/197713
- Alexander Hamilton, Jr. Letters, 1832/18331
- Alexander Lockhart Nelson papers, 1848/19022
- Alexander M. Davis Papers, 1850/18924
- Alexander McNutt Glasgow Family Papers, 1823/190313
- Alexander Sterrett Paxton Papers, 1858/1959, bulk 1861/18652
- Alexander Tedford "Ted" Barclay correspondence, 1861/18641
- Alexander Von Humboldt Portrait Print, 1855/18901
- Alexander, Fultz, and Willson Families Collection, 1770/19701
- Alexandria Black Family Reunion Digital Collection, 1937/20051
- Alexandria History Collection (MS240), 1767/200827
- Alexandria Library Company Records (MS002), 1794/20075
- Alexandria Scrapbook Collection (MS003), 1830/18933
- Alexandria, Virginia City Records (MS019), 1750/1983, bulk 1825/18751