- Ames Library of South Asia Maps (388)
- Amos S. Deinard Papers (13)
- Andersen Horticultural Library General Collection (1)
- Annual and Quarterly Reports of YMCA International Work in China (1095)
- Arab American Collection (29)
- Armenian American Collection (16)
- Arthur E. Schneider Papers (13)
- Arthur Kleiner Collection of Silent Movie Music (421)
- Association for Computing Machinery (549)
- Association for Voluntary Sterilization Records (5)
- Athletics Department Photograph Collection (UMD) (4655)
