- Booksellers and bookselling1
- Booksellers' copies2
- Booksellers' labels1
- Booth, William1
- Borders, Ornamental (Decorative arts)1
- Borghi, Piero, -approximately 14941
- Boschi, Giovanni1
- Bosses (Bindings)9
- Botany3
- Botany, Medical4
- Bourbon, Jacques de, 1370-14381
- Bracciolini, Poggio, 1380-14591
- Bracciolini, Poggio, 1380-1459. Correspondence1
- Brancacci, Antonio1
- Brancacci, Branca1
- Brancacci, Caterina1
- Brass bosses (Bindings)6
- Brass clasps1
- Breviaries74
- Breviary (Benedictine : Catholic Church)1