- Abraham Anson papers, 1939/200523
- Agnes Wolf papers, 1966/200612
- Alan Bowne papers, 1964/1991, bulk 1980/19896
- Alexander Haight family collection, 1764/19763
- American Political Items Collectors collection8
- American Public Transportation Association records, 1898/1999232
- American Theatre Association records107
- Amy Federman performing arts collection, 1963/20121
- Arena Stage records, 1949/2010526
- Armistead L. Boothe collection, 1920/19836
- Arnold Sundgaard papers, 1925/198869
- Arthur Arundel papers, 1964/19904
- Arthur E. Scott photograph collection20
- Arthur Franklin Raper papers, 1959/19756
- Arthur Peterson papers1