- Armies1
- Arnaldus, de Villanova, -13111
- Ashkenazim1
- Aurispa, Giovanni, approximately 1376-14591
- Autographs1
- Bartolomeo, da Petroio, 1488?-15541
- Basil, Saint, Bishop of Caesarea, approximately 329-3791
- Basilica di S. Marco Evangelista al Campidoglio (Rome, Italy)1
- Battle of Pharsalus (Farsala, Greece : 48 B.C.)1
- Benefices, Ecclesiastical1
- Biography1
- Bona, Queen, consort of Sigismund I, King of Poland, 1494-15571
- Bosses (Bindings)1
- Botanists1
- Botany1
- Botany, Medical1
- Bracciolini, Poggio, 1380-14591
- Brass bosses (Bindings)1
- Bulls, Papal1
- Cabala1