- Abraham Anson papers, 1939/20056
- Agnes Wolf papers, 1966/20061
- Alan Bowne papers, 1964/1991, bulk 1980/19891
- Alexander Haight family collection, 1764/19772
- American Political Items Collectors collection3
- American Public Transportation Association records, 1898/19997
- Arena Stage records, 1949/20108
- Arnold Sundgaard papers, 1925/198816
- Arthur E. Scott photograph collection4
- Arthur E. Scott photograph collection, 1910/19764
- Arthur Peterson papers1
- Barbara Lustbader New York City playbills collection, 1957/20124
- Bernard Brenner brass rubbings collection1
- Broadway souvenir theatre programs collection, 1942/19971
- C-SPAN records, 1809/2012, bulk 1978/20122