- Athīr al-Dīn al-Abharī, al-Mufaḍḍal ibn ʻUmar, -1265. Hidāyat al-ḥikmah1
- Atoms1
- Auctions1
- Augustine, of Hippo, Saint, 354-4301
- Augustinians2
- Aurispa, Giovanni, approximately 1376-14591
- Austria4
- Austria--Vienna1
- Autographs30
- Autos-da-fé3
- Aveiro, Gabriel de Lencastre, Duque de, 1667-17451
- Awḍaḥ al-masālik ilá Alfīyat Ibn Mālik (Ibn Hishām, ʻAbd Allāh ibn Yūsuf)1
- Ayyubids1
- Babur, Emperor of Hindustan, 1483-15301
- Bacán, Hernando de1
- Baglioni, Niccolò1
- Bakers2
- Baldini, Antonio1
- Baldo, Antonio di1
- Baldo, Vestro di1