Former Owner
- Luigi Arrigoni1
- Luigi Celotti1
- Luigi Clerici1
- Luis Mayora1
- Léon Gruel1
- Léon Techener1
- Magby, H1
- Marchese Linterno1
- Margaret of Croy1
- Marguerite de Fontenay1
- Marie Ange-Toussaint Placide de Ferron1
- Marie Cleophe de Sollario1
- Marie Thomas1
- Marie de Albano1
- Marie-Caroline of Bourbon-Two Sicilies, Duchess of Berry1
- Marienstiftsgymnasium1
- Marino Grimani1
- Mark Lansburgh1
- Maurice Kann1
- Mayfair Rare Books and Manuscripts1