Former Owner
- Biblioteca civica di Verona1
- Biblioteca del Seminario Arcivescovile1
- Bibliotheca Philosophica Hermetica1
- Bill Ward1
- Birch & Son1
- Birgittinessenklooster Mariënwater1
- Blenheim Palace1
- Bodleian Library1
- Boies Penrose1
- Bonaventura Brem1
- Bonvesino, Marco1
- Boudewijn Willemszoon van Drenckwaert1
- Brahmānaṃdatīrtha1
- Branners Bibliofile Antikvariat1
- Breslauer and Meyer1
- Brian Douglas Stilwell1
- Brick Row Book Shop1
- Bridget Hunt1
- Brinton, Daniel G. 1837-18991
- Bristol Baptist College1