- Alexandria History Collection (MS240), 1767/20088
- Alexandria Hospital School of Nursing records, 1894/19871
- Alexandria Library Board Records (MS416), 1937/20209
- Alexandria Library Company Records (MS002), 1794/200714
- Alexandria Library Records (MS098), 1937/20138
- Alexandria Recital Series Papers (MS312), 1980/20025
- Alfonso García Robles papers, 1978/19887
- Alfred A. Bolton, Papers regarding History of Management and Other Material, 1900/200737
- Alfred C. Payne Collection, 1917/200363
- Alice Cartledge Cornett, Journalist, Papers, 1945/2017, bulk 1973/19921
- Alice Huffman Bugel Collection (Eighth Evacuation Unit Hospital), 1942/20001
- Alice McMechen, Collector, Papers of Artist Alvena V. Seckar, 1945/20083
- Allan Blank Papers, 1958/200926
- Alleghany Chapter, National Society of the Daughters of the American Revolution Records, 1890/202223
- Alliance of Women in Architecture (AWA) Records, 1992/19983