Former Owner
- John C. Jackson1
- John F. Fleming1
- Joseph Barrois2
- Joseph Whitney1
- Lambach Abbey1
- Laurence Claiborne Witten II2
- Louis César de La Baume Le Blanc1
- Lucien Magne1
- Léon Techener1
- Maggs Bros Ltd6
- Margaret F. Woodward1
- Marguerite de Fontenay1
- Marie Ange-Toussaint Placide de Ferron1
- Martinus Nijhoff1
- Mary Schell Collins1
- Michel de Léon1
- Middle Hill Rare Books & Manuscripts AB (Stockholm, Sweden)1
- Minnis, Katherine1
- Monsieur de Bel Air1
- Mrs. F. W. Bartlett1