- Anna Banana collection, 1975/20031
- Anna P. Sokolina Architectural Collection, 1924/20194
- Anna Schein, Collector, Feedsack Textile Bag Collection, 1925/19651
- Anne Griswold Tyng Architectural Collection, 1969/19991
- Anne H. Cutler Papers, 1930/2013, bulk 1954/20006
- Anne H. Price Yates Papers, 1904/1985, bulk 1975/19851
- Anne Price Yates Papers II, 1898/20052
- Anniversaries and Commemorations Collection, 1981/20001
- Annual Reports (PB-02), 1935/20182
- Arena Stage records, 1949/20108
- Armand J. Galfo Papers, 1940/2008, bulk 1958/19955
- Armistead Boothe Papers (MS164), 1803/19901
- Armstead L. Robinson papers, 1848/2001, bulk 1967/19924
- Arnold Sundgaard papers, 1925/19888
- Art Attack records, 1979/20091