Former Owner
- Betty Freudenheim1
- Biblioteka Tulezynska1
- Bibliotheca Beggadorum1
- Bibliotheca Philosophica Hermetica1
- Bill Jackson1
- Bill McGrath1
- Bloomsbury Auctions1
- Bodleian Library1
- Boies Penrose II1
- Boudewijn Willemszoon van Drenckwaert1
- Branners Bibliofile Antikvariat1
- Brick Row Book Shop1
- Bridget Hunt1
- Bruce Bannerman1
- Brudenell family1
- Budapest University of Jewish Studies1
- Burg Kreuzenstein1
- Burgersdijk & Niermans1
- C.B1
- Caesareum Societatis Jesu Collegium Viennense1