Former Owner
- L’Art Ancien1
- M. Haimmiller1
- M. Lee1
- M. Pierre Guarin1
- Madame Théophile Belin1
- Maffeo Pinelli1
- Magby, H1
- Maksymilian Mielzynski1
- Mannheimer Hofbibliothek1
- Mannucci family1
- Manuel John Johnson1
- Marcantonio Contarini1
- Marcantonio V Borghese1
- Marcel Mirgodin1
- Marchese Porri-Carcani1
- Marcianus F. Rossi1
- Marco Antonio Morosini1
- Marco da Bologna1
- Margaret Anna Hazard1
- Margaret Barclay Wilson1