- "Trapped in a System" pamphlet by Carl Oglesby of Students for a Democratic Society, 19651
- "We Were Not Shadows" by Colonel E.P.J. Ryan, O.B.E typed manuscript, 1955/19651
- Abraham Anson papers, 1939/200594
- Alan Bowne papers, 1964/1991, bulk 1980/19892
- Alexander Haight family collection, 1764/19764
- Alexander Haight family collection, 1764/19778
- American Political Items Collectors collection10
- American Political Items Collectors collection, 1895/19881
- American Public Transportation Association records, 1898/1999339
- American Public Transportation Association records, 1950/19801
- American Theatre Association records10
- Amy Federman performing arts collection, 1963/20122
- Arena Stage records, 1949/2010438
- Armistead L. Boothe collection, 1920/198314
- Arnold Goldman Living Newspaper collection, 1931/19738