Former Owner
- Louis Lamm1
- Louis Thompson Rowe1
- Ludwig Rosenthal's Antiquariaat1
- Luis Fernández de Córdoba y Aragón1
- Madeleine Cosman1
- Madyan Qusuni1
- Maggs Bros Ltd1
- Malachia Ormanian1
- Manoel Pereira da Sylva1
- Marcantonio Contarini1
- Mario Maffei1
- Mark Lansburgh1
- Martin Breslauer1
- Mary Augusta Strachey1
- Mayer Sulzberger1
- Monteles, Avraham de1
- Monteles, Yosef de1
- Morris Jastrow, Jr.1
- Muḥammad Nāfiʻ, active 18581
- Muḥammad Ṣadr al-Dīn1