Former Owner
- Bertram Ashburnham, 4th Earl of Ashburnham1
- Biblioteca Bottigella1
- Biblioteca Trivulziana1
- Bill McGrath1
- Bill Ward1
- Birgittinessenklooster Mariënwater1
- Bonhams & Butterfield1
- Bridgewater Library1
- Bristol Baptist College1
- Bruce P. Ferrini1
- Byron Reed1
- Būtū ʻAbd al-Bāqī1
- C. Bruscoli1
- Camilla Doria Pallavicini1
- Carl Reinhardt1
- Carlo Morbio6
- Carlos José Gutiérrez de los Ríos y Rohan Chabot Fernán-Núñez1
- Castel-Lodève family1
- Catherine de' Medici1
- Charles Burr1