Former Owner
- Beatrice de Fouar1
- Beauvais Cathedral1
- Benedetto Affaticati2
- Benetto Spinelli1
- Bernard Quaritch Ltd12
- Bertram Ashburnham, 4th Earl of Ashburnham21
- Biblioteca Trivulziana1
- Branners Bibliofile Antikvariat1
- Brian Douglas Stilwell1
- Brick Row Book Shop1
- Bruce P. Ferrini6
- Byron Reed1
- C Traylen Bookshop1
- Certosa di Farneta, Province of Lucca2
- Charles Ede1
- Charles Lenormand du Coudray2
- Charles Stephen Ascherson1
- Charles-Benoit de Campigny1
- Charlier de Namur1
- Chiswick Book Shop1