Former Owner
- Boies Penrose II2
- Bonaventura Brem1
- Boudewijn Willemszoon van Drenckwaert1
- Brahmānaṃdatīrtha1
- Branners Bibliofile Antikvariat1
- Brayton C. Ives3
- Breslauer and Meyer1
- Brian Douglas Stilwell1
- Brick Row Book Shop1
- Bridget Hunt1
- Bristol Baptist College1
- Bruce P. Ferrini4
- Brudenell family1
- Brunori Cadamosto1
- Budapest University of Jewish Studies1
- Burg Kreuzenstein1
- Burndy Library1
- Bury St Edmunds Abbey3
- Buxheim Charterhouse3
- Byron Reed1