Former Owner
- Marcela Gabriela1
- Marchese Linterno1
- Marchese Porri-Carcani1
- Maria Ludovica Favia del Core Borromeo1
- Marie Cleophe de Sollario1
- Marie de Albano1
- Martin Breslauer1
- Matteo Luigi Canonici1
- Mayfair Rare Books and Manuscripts1
- Mercantile Library Company1
- Morris Jastrow, Jr.1
- Nathaniel Sherman Bouton1
- Nicholas B. Scheetz1
- Nicolas Antoine Labbey de Billy1
- Novalesa Abbey1
- Oliver Henry Perkins1
- Parroco di Taviano, Luigi Bruno, active 20th century1
- Paul Gottschalk1
- Paul Sabatier1
- Petrus Leonardus1