- "The 82nd Congress MUST Abolish the United Nations!" Korean War flyer, 1951/19521
- Abraham Anson papers, 1939/200512
- Adams T. Rice papers, 1922/19602
- Agnes Wolf papers, 1966/20061
- Alexander Haight family collection, 1764/19764
- American Political Items Collectors collection9
- American Public Transportation Association records, 1898/1999340
- American Theatre Association records5
- Arena Stage records, 1949/201072
- Armistead L. Boothe collection, 1920/19833
- Arnold Goldman Living Newspaper collection, 1931/19734
- Arnold Sundgaard papers, 1925/198895
- Arthur E. Scott photograph collection40
- Arthur Peterson papers3
- Ballet Russe de Monte Carlo souvenir program with autographs, 1951/19521