- Accursius, glossator, approximately 1182-approximately 12601
- Acquittals1
- Action and adventure fiction1
- Actions and defenses1
- Advent sermons1
- Advent--Liturgy1
- Adventure stories, Spanish1
- Aesop's fables1
- Affinity (Law)1
- Afghanistan1
- Agustín, Antonio, 1517-1586. Dialogos de medallas inscriciones y otras antiguedades1
- Al-Munajjim al-Kashi, Yahya ibn Imad bin Yahya1
- Alba, Fernando Alvarez de Toledo, duque de, 1507-15821
- Albizzi family1
- Alcuin, 735-804. Correspondence1
- Alexander VII, Pope, 1599-16671
- Alfonso I King of Asturias, 693-7561
- Alfonso III, King of Asturias and Leon, approximately 848-approximately 9101
- Alfonso V, King of Asturias and León, 994-1027 or 10281
- Alfonso VI, King of Castile and Leon, 1030-11091