- Abraham Anson papers, 1939/200526
- Agnes Wolf papers, 1966/200612
- Alan Bowne papers, 1964/1991, bulk 1980/19896
- American Political Items Collectors collection1
- American Political Items Collectors collection, 1895/19881
- American Public Transportation Association records, 1898/199954
- American Theatre Association records15
- Amy Federman performing arts collection, 1963/20122
- Arena Stage records, 1949/2010936
- Arnold Sundgaard papers, 1925/198820
- Art Attack records, 1979/200930
- Arthur Arundel papers, 1964/19908
- Arthur Herman papers, 1950/19991
- Arthur Peterson papers2
- Arthur Peterson papers, 1940/19871