Former Owner
- Martinus Nijhoff1
- Maurice Kann1
- Middle Hill Rare Books & Manuscripts AB (Stockholm, Sweden)1
- Minerva Kaiser1
- Monsieur de Bel Air1
- Mrs. F. W. Bartlett1
- Muriel Agnes Fry1
- N. Pauli1
- Nicholas Chevalier1
- Nicolas Rauch1
- Nicolas Yemeniz1
- Notre-Dame de Macourt monastery1
- Otto Orren Fisher1
- Paul Gottschalk1
- Paul Gruel1
- Paul Sabatier1
- Peter Le Neve1
- Petrus Hofstede1
- Philadelphia Rare Books & Manuscripts Company1
- Philip C. Duschnes1