Former Owner
- Benoît Le Court1
- Bern Dibner1
- Bernard Halliday1
- Bernard Rosenthal1
- Bernard Serrigny1
- Bernardi1
- Bernardo Mendel1
- Bertram Dobell1
- Bertrand de Chalençon1
- Betty Freudenheim1
- Biblioteka Tulezynska1
- Bibliotheca Beggadorum1
- Bibliotheca Philosophica Hermetica1
- Bill Jackson1
- Bill McGrath1
- Bloomsbury Auctions1
- Bodleian Library1
- Boies Penrose II1
- Bonvesino, Marco1
- Boudewijn Willemszoon van Drenckwaert1