- Astrology, Iranian1
- Astronomy, Arab--Tables1
- Attila, -4531
- Augsburg Confession1
- Aurispa, Giovanni, approximately 1376-14591
- Austria--Lambach (Upper Austria)1
- Austria--Vienna1
- Autographs1
- Avatars (Religion)1
- Averroës, 1126-1198. Talkhīs kitāb al-ʻIbārah1
- Averroës, 1126-1198. Talkhīṣ kitāb al-maqūlāt1
- Averroës, 1126-1198. Talkhīṣ madkhal Furfūriyūs1
- Bahrām V, King of Iran, -4381
- Bakers1
- Balances (Weighing instruments)1
- Baptism1
- Baptism of Jesus Christ1
- Baptism--Catholic Church1
- Barbara, Saint1
- Bardi, Giovanni de', conte di Vernio, 1534-16121