Former Owner
- Louis César de La Baume Le Blanc1
- Louis H. Silver1
- Ludwig Rosenthal1
- Luigi Serra di Cassano1
- Luini, Pacifico (Franciscan priest), active 19th century1
- Lydia Thompson Morris1
- Lyon Cathedral1
- Madame Théophile Belin1
- Maksymilian Mielzynski1
- Marchese Porri-Carcani1
- Margaret Le Seigneur1
- Margaret of Croy1
- Marguerite of Lorraine1
- Mary Schell Collins1
- Matteo Luigi Canonici1
- Mercantile Library Company1
- Michel Chasles1
- Minnis, Katherine1
- Morot1
- Muriel Agnes Fry1