- Acrostics1
- Actions and defenses1
- Afghanistan1
- Afghanistan--Herat1
- Agnes, Saint, Martyr1
- Agreda, Dominici d'1
- Alban, Saint, -304?1
- Albigenses1
- Alchemy--Bibliography1
- Aldobrandini, Giovanni degli1
- Alessandri, Alessandro degli1
- Alessandri, Niccolò degli1
- Alessandro, Pietro di1
- Alexander, the Great, 356 B.C.-323 B.C.1
- Alexius, Saint1
- Alfonso V, King of Aragon, 1396-14581
- Alfīyah (Ibn Mālik, Muḥammad ibn ʻAbd Allāh)1
- Alfīyat al-ʻIrāqī (ʻIrāqī, ʻAbd al-Raḥīm ibn al-Ḥusayn)1
- Allegory1
- Almagest (Ptolemy)1