Former Owner
- Michel Chasles1
- Michel Ferdinand d'Albert d'Ailly1
- Middle Hill Rare Books & Manuscripts AB (Stockholm, Sweden)1
- Monastery at San Gregorio al Celio1
- Monastery of San Bartolmeo, Arezzo, Tuscany1
- Moritz Dessauer1
- Nanna Corbinello1
- Nathaniel Sherman Bouton1
- Nicholai von Bodeck1
- Nicolas Antoine Labbey de Billy1
- Novalesa Abbey1
- Noël Pinelli1
- Ohio State University Center for Epigraphical and Palaeographical Studies1
- Oliver Henry Perkins1
- Oliver R. Barrett1
- Paolo Gallo1
- Paolo Vimercati Sozzi1
- Parroco di Taviano, Luigi Bruno, active 20th century1
- Paul Gottschalk1
- Paul Sabatier1