Former Owner
- André Rooryck1
- Anne Claude Philippe, Comte de Caylus1
- Anne de Graville1
- Anne of Brittany1
- Anthony Askew1
- Arthur Brölemann1
- Arthur Thomas Bannister1
- Augustus Pugin1
- Bartholus Blancellus1
- Bernard M. Rosenthal1
- Bernard Serrigny1
- Bernardo Bembo1
- Bertram Ashburnham, 4th Earl of Ashburnham1
- Bibliotheca Philosophica Hermetica1
- Bill Jackson1
- Brayton C. Ives1
- C.B1
- Carl Hermann Grabauer1
- Carlo Archinto, 2nd Marquess of Parona, 3rd Count of Trainate2
- Caxton Club1