Former Owner
- Luis Escobet1
- Madame Théophile Belin1
- Madyan Qusuni1
- Manoel Pereira da Sylva1
- Manuel Fernández del Castillo1
- Manuel John Johnson1
- 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
- Michiel family1
- Mortimer Loeb Schiff1
- Nicholas N. Martinovitch1
- Nicolas Moreau1
- Oliver Henry Perkins1
- Oliver R. Barrett1