Former Owner
- Luigi Celotti1
- Léon Techener1
- Maggs Bros Ltd9
- Marcela Gabriela1
- Marie Cleophe de Sollario1
- Marie de Albano1
- Marie-Caroline of Bourbon-Two Sicilies, Duchess of Berry1
- Marino Grimani1
- Mariota Lyle1
- Matteo Barresi1
- Maxwell Sommerville1
- Mayfair Rare Books and Manuscripts1
- Middle Hill Rare Books & Manuscripts AB (Stockholm, Sweden)1
- Minnis, Katherine1
- Mrs. F. W. Bartlett1
- Muriel Agnes Fry1
- N. Pauli1
- Nicholas B. Scheetz1
- Nicholas Chevalier1
- Nicolas Antoine Labbey de Billy1