- "The Unspeakable War" pamphlet by Labor Committee for Peace in Vietnam, 19661
- Abraham Anson papers, 1939/200580
- Agnes Wolf papers, 1966/20065
- Alan Bowne papers, 1964/1991, bulk 1980/19892
- Alexander Haight family collection, 1764/19765
- Alexander Haight family collection, 1764/19778
- American Political Items Collectors collection9
- American Political Items Collectors collection, 1895/19881
- American Public Transportation Association records, 1898/1999326
- American Public Transportation Association records, 1950/19801
- American Theatre Association records11
- Amy Federman performing arts collection, 1963/20122
- Arena Stage records, 1949/2010444
- Armistead L. Boothe collection, 1920/198314
- Arnold Goldman Living Newspaper collection, 1931/19738