- Alexandria (Va.). City Clerk1
- Alexandria (Va.). Department of Housing and Community Development1
- Alexandria (Va.). Department of Planning and Urban Renewal1
- Alexandria (Va.). Office of City Engineer1
- Alexandria Library Association (1897-1937)1
- Alexandria Library Company1
- Alexandria Library Society (1937-1953)1
- Allen family1
- Amanda Hall Rare Books1
- Ambler, Charles Henry, 1876-19571
- Amherst, Jeffery Amherst, Baron, 1717-17971
- Anderson, Ellen Graham1
- Anderson, James, 1745-18071
- Anderson, William C.1
- Andrews, Mason Cooke (1919-2006)1