- Accounting1
- Accursius, glossator, approximately 1182-approximately 12601
- Acquittals1
- Action and adventure fiction1
- Actions and defenses1
- Administration2
- Advent sermons1
- Advent--Liturgy1
- Adventure stories, Spanish1
- Aeneas (Legendary character)2
- Aeneis (Virgil)2
- Aesop's fables1
- Affinity (Law)1
- Afghanistan1
- Agriculture3
- Agustín, Antonio, 1517-1586. Dialogos de medallas inscriciones y otras antiguedades1
- Ajurrūmīyah (Ibn Ājurrūm, Muḥammad ibn Muḥammad)2
- Al-Munajjim al-Kashi, Yahya ibn Imad bin Yahya1
- Alba, Fernando Alvarez de Toledo, duque de, 1507-15821
- Albizzi family1