Former Owner
- Beatrice de Fouar1
- Bernard Serrigny1
- Bernardo Bembo1
- Betty Freudenheim1
- Bibliotheca Philosophica Hermetica1
- Bill Jackson1
- Brayton C. Ives1
- Brick Row Book Shop1
- C.B1
- Carlo Archinto, 2nd Marquess of Parona, 3rd Count of Trainate1
- Caxton Club1
- Cecil H. Clough1
- Chapelle du monastère du Carmel de Nantes1
- Charles Brodrick1
- Charles Bruce, 3rd Earl of Ailesbury1
- Charles Stephen Ascherson1
- Chiswick Book Shop1
- Christian Gottlieb Schwarz1
- Christopher Cheney1
- Coppo family1