- Arrigucci, Andrea1
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- Assassination1
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- Astronomy, Medieval1
- Attila, -4531
- Augustinians1
- Aurispa, Giovanni, approximately 1376-14591
- Banks and banking1
- Bardi, Giovanni de', conte di Vernio, 1534-16121
- Bartolomeo, da Petroio, 1488?-15541
- Basilica di S. Marco Evangelista al Campidoglio (Rome, Italy)1
- Bible. Acts1
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- Bible. Pentateuch--Criticism, interpretation, etc--Early works to 18001