Former Owner
- Biblioteca del Seminario Arcivescovile1
- Biblioteka Tulezynska1
- Bibliotheca Beggadorum1
- Bibliotheca Philosophica Hermetica1
- Bibliotheque Seminaire de Notre Dame de Puy1
- Bill Jackson1
- Bill McGrath3
- Bill Ward1
- Binyamin ben Salem Elark2
- Birch & Son1
- Birgittinessenklooster Mariënwater1
- Blenheim Palace1
- Bloomsbury Auctions7
- Bodleian Library1
- Boies Penrose1
- Boies Penrose II2
- Bonaventura Brem1
- Bonhams & Butterfield1
- Boudewijn Willemszoon van Drenckwaert1
- Brahmānaṃdatīrtha1