- "California or Bust" travel scrapbook, 19561
- "We Were Not Shadows" by Colonel E.P.J. Ryan, O.B.E typed manuscript, 1955/19651
- Abraham Anson papers, 1939/20052
- Adams T. Rice papers, 1922/19602
- Alexander Haight family collection, 1764/19761
- Alexander Haight family collection, 1764/19771
- American Political Items Collectors collection, 1895/19881
- American Public Transportation Association records, 1898/19991
- American Public Transportation Association records, 1950/19801
- Arena Stage records, 1949/20102
- Armistead L. Boothe collection, 1920/19832
- Arnold Goldman Living Newspaper collection, 1931/19732
- Arnold Sundgaard papers, 1925/19882
- Arthur E. Scott photograph collection, 1910/19761
- Arthur Herman papers, 1950/19991