- Botany, Medical1
- Bouchard family1
- Bouchet, Jean, 1476-approximately 1558. Balade moralle contre les aveuglez mondainsi1
- Bourbon, Jacques de, 1370-14381
- Bowyer, William1
- Bracciolini, Poggio, 1380-14591
- Brancacci, Antonio1
- Brancacci, Branca1
- Brancacci, Caterina1
- Brass bosses (Bindings)24
- Brass clasps2
- Bread2
- Brescia (Italy). Podestà€1
- Breviaries121
- Breviary (Catholic Church)6
- Bridget, of Sweden, Saint, approximately 1303-13731
- Broadsides1
- Brunelleschi, Alderotto de'1
- Brunelleschi, Antonia1
- Brunelleschi, Betto de'1