Former Owner
- Marilyn Carbonell1
- Marino Grimani1
- Mario Pedro Arata1
- Mary Lusher1
- Matteo Luigi Canonici1
- Matthaeus Lupin1
- Maxwell Sommerville1
- Melchior Daniel Neubronner1
- Menaḥem Naḥum, ha-Leṿi, mi-ḳ.ḳ. Dribin1
- Michiel family1
- Mikhail Golitsyn1
- Monē tou Timiou Prodromou1
- Morris H. Morgan1
- Morris Jastrow, Jr.1
- National Library of Greece1
- Nicolai Briganti1
- Nicolaus de Monte Murro1
- Norman H. Strouse1
- Oettingen-Wallerstein library1
- Oliver R. Barrett1