Former Owner
- Boies Penrose II1
- Bonaventura Brem1
- Bonhams & Butterfield1
- Boudewijn Willemszoon van Drenckwaert1
- Branners Bibliofile Antikvariat1
- Brayton C. Ives4
- Breslauer and Meyer1
- Brian Douglas Stilwell1
- Brick Row Book Shop1
- Bridget Hunt1
- Bruce P. Ferrini13
- Brudenell family2
- Brunori Cadamosto1
- Budapest University of Jewish Studies1
- Burgersdijk & Niermans1
- Burndy Library1
- Bury St Edmunds Abbey3
- Buxheim Charterhouse5
- Byron Reed1
- C Traylen Bookshop1