Former Owner
- Arthur Brölemann1
- Baldassarre Boncompagni1
- Barbara Hackenmayrin1
- Baron Paul Adolphe Dieudonné Thiébault1
- Bartholdus and Johann Flachmann1
- Basilica Gößweinstein1
- Bateman family1
- Bernard Quaritch1
- Bernard Quaritch Ltd1
- Bertram Ashburnham, 4th Earl of Ashburnham1
- Birch & Son1
- Boies Penrose1
- Boies Penrose II1
- Branners Bibliofile Antikvariat1
- Bruce P. Ferrini2
- Burndy Library1
- Buxheim Charterhouse4
- Caspar René Gregory1
- Catharine Wisser1
- Charles Carmichael Lacaita1