Former Owner
- Menaḥem Naḥum, ha-Leṿi, mi-ḳ.ḳ. Dribin1
- Meschatin La Faye family1
- Michael Kantakouzenos Şeytanoğlu1
- Michael Wodhull1
- Michel de Léon1
- Michele Amari1
- Middle Hill Rare Books & Manuscripts AB (Stockholm, Sweden)1
- Millard Meiss1
- Minerva Kaiser1
- Minnis, Katherine1
- Molin1
- Monsieur de Bel Air1
- Morris H. Morgan1
- Morton Davis Mitchell1
- Mrs. F. W. Bartlett1
- Mrs. Turnbull1
- Muriel Agnes Fry1
- Museo Cavaleri1
- N. Pauli1
- Nathaniel Castleton Stephen Poyntz1