- Administration1
- Advent--Liturgy1
- Aeneas (Legendary character)1
- Aeneis (Virgil)1
- Agnes, Saint, Martyr1
- Agriculture--Economic aspects1
- Albums1
- Albums (Books)1
- Alchemy--Bibliography1
- Alcuin, 735-8041
- Alexander Balas, King of Syria, -145 B.C.1
- Alexander, de Villa Dei. Doctrinale puerorum1
- Alfonso X, King of Castile and Leon, 1221-12841
- Ambrose, Saint, Bishop of Milan, -3971
- Ambrosian rite (Catholic Church)1
- Anecdotes1
- Anglo-Norman dialect1
- Animals1
- Annals and chronicles1
- Anselm, Saint, Archbishop of Canterbury, 1033-11091