Former Owner
- Leonardo Lapiccirella1
- Leonello d'Este, Marquis of Ferrara1
- Libreria antiquaria Mediolanum1
- Libreria la Bibliofila1
- Loftus Bland1
- Louis César de La Baume Le Blanc1
- Ludwig Rosenthal's Antiquariaat1
- Luigi Celotti1
- Léon Gruel1
- Margaret F. Woodward1
- Marguerite de Fontenay1
- Marie Ange-Toussaint Placide de Ferron1
- Marie-Caroline of Bourbon-Two Sicilies, Duchess of Berry1
- Marino Grimani1
- Mariota Lyle1
- Martinus Nijhoff1
- Mary Schell Collins1
- Maurice Kann1
- Maximilian Henry of Bavaria1
- Maxwell Sommerville1