Former Owner
- Luis Ordoñez1
- Lutheran Theological Seminary at Philadelphia1
- Madame Théophile Belin1
- Maggs Bros Ltd1
- Marcantonio Contarini1
- Marianne F. ???1
- Mark Augspürger1
- Mark Sittich von Hohenems Altemps1
- Markus Fugger1
- Mary Schell Collins1
- Mary Talbot, Countess of Shrewsbury1
- Mary W. T. Dickinson1
- Mayer Sulzberger1
- Mortimer Loeb Schiff1
- Muḥammad Bāqir Shīrāzī1
- Muḥammad Ḥusayn ibn Jaʻfar Qulī1
- Oliver Henry Perkins1
- Otto Orren Fisher1
- Paland, Irmengarde von1
- Paolo Giovio1