- Bible. Tobit1
- Bible. Wisdom of Solomon1
- Bibles1
- Bio-bibliography1
- Bishops--Temporal power1
- Blaise, Saint, -approximately 3161
- Blind stamped bindings1
- Blount, Thomas, active 16th century1
- Boards1
- Booksellers and bookselling1
- Booksellers' labels1
- Botany, Medical1
- Bouchard family1
- Bouchet, Jean, 1476-approximately 1558. Balade moralle contre les aveuglez mondainsi1
- Bracciolini, Poggio, 1380-1459. Correspondence1
- Bridget, of Sweden, Saint, approximately 1303-13731
- Buffoni, Baldello1
- Buonamici, Giovanni Francesco1
- Byzantine Empire1
- Cabala and Christianity1