Former Owner
- Birgittinessenklooster Mariënwater1
- Blenheim Palace1
- Bloomsbury Auctions7
- Bodleian Library1
- Boies Penrose1
- Boies Penrose II2
- Bonaventura Brem1
- Bone, Michael1
- Bonhams & Butterfield1
- Bonvesino, Marco1
- Boudewijn Willemszoon van Drenckwaert1
- Brahmānaṃdatīrtha1
- Branners Bibliofile Antikvariat1
- Brayton C. Ives4
- Breslauer and Meyer1
- Brian Douglas Stilwell1
- Brick Row Book Shop1
- Bridget Hunt1
- Bridgewater Library1
- Brinton, Daniel G. 1837-18991