- "We Were Not Shadows" by Colonel E.P.J. Ryan, O.B.E typed manuscript, 1955/19651
- Abraham Anson papers, 1939/200517
- Adams T. Rice papers, 1922/19602
- Alexander Golitzen film production collection2
- Alexander Haight family collection, 1764/19764
- American Political Items Collectors collection8
- American Public Transportation Association records, 1898/1999337
- American Theatre Association records7
- Arena Stage records, 1949/2010114
- Armistead L. Boothe collection, 1920/19836
- Arnold Goldman Living Newspaper collection, 1931/19734
- Arnold Sundgaard papers, 1925/1988100
- Arthur E. Scott photograph collection66
- Arthur Peterson papers3
- Barbara Lustbader New York City playbills collection, 1957/20124