Former Owner
- Barbarigo family1
- Barbe de Laon1
- Basilica of Sant'Ambrogio1
- Beatrice de Fouar1
- Beauvais Cathedral1
- Benedetto Affaticati2
- Benjamin Franklin Stevens2
- Benoît Le Court1
- Bentley Lyonel John Tollemache, 3rd Baron Tollemache1
- Bergendal Collection1
- Bernard M. Rosenthal1
- Bernard Quaritch Ltd9
- Bernardo Bembo1
- Bertram Ashburnham, 4th Earl of Ashburnham8
- Beverly Chew1
- Biblioteca Trivulziana1
- Branners Bibliofile Antikvariat1
- Brayton C. Ives2
- Brian Douglas Stilwell1
- Brick Row Book Shop1