Former Owner
- Mayer Sulzberger1
- Melchior Daniel Neubronner1
- Michael M. Zagayski1
- Michiel family1
- Milton Fischmann1
- Morris Jastrow, Jr.1
- Muhsinzâde Ömer Aǧa1
- Musa Kâzım Efendi1
- Muḥammad Amīn al-Sabtī al-Alūsī Anṣārī1
- Muḥammad Anīs Ṭālawī1
- Muḥammad ʻAwwād ibn Ḥusayn Afandī1
- New York Academy of Medicine1
- Nicholas N. Martinovitch1
- Nicolas Moreau1
- Oliver R. Barrett1
- Otto Ege1
- Otto Jahn1
- Otto Orren Fisher1
- P. Desq1
- Philip Augustus Hanrott1