- Abraham Anson papers, 1939/20053
- Agnes Wolf papers, 1966/20061
- Alan Bowne papers, 1964/1991, bulk 1980/19892
- American Political Items Collectors collection3
- American Public Transportation Association records, 1898/19997
- Arden B. Schell Watergate collection1
- Arena Stage records, 1949/20104
- Arnold Sundgaard papers, 1925/19888
- Arthur E. Scott photograph collection4
- 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 1978/20121
- C. Harrison Mann, Jr. papers, 1832/19792