Former Owner
- Lathrop Colgate Harper1
- Laurentius van der Torqel1
- Leonardo Lapiccirella1
- Libreria la Bibliofila1
- Louis César de La Baume Le Blanc1
- Lucien Magne1
- Ludwig Rosenthal's Antiquariaat1
- Marcela Gabriela1
- Margaret F. Woodward1
- Marguerite de Fontenay1
- Marie Ange-Toussaint Placide de Ferron1
- Marie Cleophe de Sollario1
- Marie de Albano1
- Mariota Lyle1
- Martinus Nijhoff1
- Matteo Luigi Canonici1
- Maurice Kann1
- Middle Hill Rare Books & Manuscripts AB (Stockholm, Sweden)1
- Minerva Kaiser1
- Monsieur de Bel Air1