- Aegidius, Saint, Abbot1
- Aesop's fables1
- Aggada1
- Agnihotra (Hindu rite)1
- Agriculture1
- Agustín, Antonio, 1517-1586. Dialogos de medallas inscriciones y otras antiguedades1
- Ajurrūmīyah (Ibn Ājurrūm, Muḥammad ibn Muḥammad)1
- Alba, Fernando Alvarez de Toledo, duque de, 1507-15821
- Albizzi, Costanza1
- Alcoholism--Religious aspects--Islam1
- Aleramo, Marquis of Monferrato, -9671
- Alexander III, Pope, -11811
- Alexander, the Great, 356 B.C.-323 B.C.1
- Alfonso II, King of Naples, 1448-14951
- Alfonso X, King of Castile and Leon, 1221-12841
- Allegory1
- Almanacs1
- Alphabet--Religious aspects1
- Alphabet--Religious aspects--Islam1
- Amadori, Bartolomeo1