Former Owner
- Lady Frances Bentinck1
- Lambach Abbey1
- Laurence Claiborne Witten II1
- Leonard Baskin1
- Leopold Gruber1
- Libreria antiquaria Mediolanum1
- Libreria la Bibliofila1
- Lisa Unger Baskin1
- Loftus Bland1
- Lorenzo de Olivera1
- Ludovico Settala1
- Luigi Serra di Cassano1
- Madeleine Cosman1
- Manoel S. Pinto1
- Mark Augspürger1
- Mark Lansburgh1
- Mark Sittich von Hohenems Altemps1
- Markus Fugger1
- Mary Augusta Strachey1
- Mary Schell Collins1