- Alexandria Gazette Ledgers (MS026), 1833/186613
- Alexandria History Collection (MS240), 1767/200829
- Alexandria Library Company Records (MS002), 1794/20077
- Alexandria Scrapbook Collection (MS003), 1830/18932
- Alexandria, Virginia City Records (MS019), 1750/1983, bulk 1825/18751
- Alfred Beckley (1802-1888) Papers, 1832/18561
- Alfred Hughes Stock Certificates and Receipts, 1852/18651
- Alfred Leyburn Papers, 1823/1899, bulk 1830/18391
- Alfred Spates Papers
1843-19093
- Alice Rice Jaffe Papers, 1807/1950, bulk 1919/19501
- Alice and Phoebe Cary Collection
1855-1870, n.d.1
- Allen Family Papers, 1766/193329
- Allen-Johnson Family Papers, 1838/19473
- Allen-Kean-Laurence family letters, 1837/19602
- Almanac collection, 1850/19092