Former Owner
- Mario Maffei1
- Marvin-L. Colker1
- Mary Schell Collins1
- Matteo Luigi Canonici1
- Mayer Sulzberger1
- Melk Abbey1
- Michel Chasles1
- Michel de Léon1
- Moritz Dessauer1
- Morris Jastrow, Jr.1
- Nicholai von Bodeck1
- Nicolas Fowle1
- Oswald Carl Friedrich von Seilern und Aspang1
- Otto Orren Fisher1
- Otto Vollbehr1
- Pangracius Chrewczer1
- Paolo Giovio1
- Paul Louis Feiss1
- Petrus Giraud1
- Petrus de Thureyo1