Former Owner
- Basilica Gößweinstein1
- Basilica of Santa Maria Novella1
- Basilios Bessarion1
- Battle Abbey1
- Benediktinerinnenabtei St. Walburg1
- Benoît Le Court1
- Bentley Lyonel John Tollemache, 3rd Baron Tollemache1
- Bern Dibner1
- Bernard Quaritch Ltd1
- Betty Freudenheim1
- Bhaṭṭaṃbhaṭṭa1
- Biblioteca Bottigella1
- Biblioteca Trivulziana1
- Bibliotheca Beggadorum1
- Bibliotheca Philosophica Hermetica1
- Bill Jackson1
- Boies Penrose1
- Boies Penrose II1
- Brayton C. Ives1
- Breslauer and Meyer1