Former Owner
- Achille Genty1
- Achille Kühnholtz-Lordat1
- Acquired before February 1992 and probably in library for many decades.1
- Acton Griscom5
- Ada E. Moorhead Thomas1
- Adam Clarke1
- Adam Sim1
- Adam de Campigny1
- Adelbert Brownlow-Cust, 3rd Earl Brownlow1
- Adelrich Benziger1
- Admont Abbey2
- Admont Abbey Library1
- Adolph Sutro11
- Adolphe Morlot1
- Adrian Van Sinderen1
- Adriana R. Salem4
- Agnes Browne1
- Alain Campbell White1
- Alan G. Thomas4
- Alan Noel Latimer Munby1