- A. Jane Duncombe Architectural Papers, 1952/20022
- Albert L. Sturm Papers, 1904/19886
- Alberta Pfeiffer Architectural Collection, 1929/19762
- Alfred C. Payne Collection, 1917/20034
- Alice Langley Hsieh Papers, 1943/19782
- Alleghany Chapter, National Society of the Daughters of the American Revolution Records, 1890/20224
- Ann A. Hertzler Collection, 1863/2013, bulk 1974/20002
- Anna P. Sokolina Architectural Collection, 1924/20191
- Anne Price Yates Papers II, 1898/20051
- Architectural League of New York: Archive of Women in Architecture Records, 1892/19762
- Armed Forces Recipes Service Cards, 1969/19721
- Arthur M. Squires Papers, 1888/1987, bulk 1940/19874
- Association for Women in Architecture Records, 1928/19921
- Association for the Preservation of Virginia Antiquities, Montgomery County Branch Papers, 1754/1996, bulk 1958/19836
- Bailey-Law Collection, 1825/19713