- Advent sermons1
- Advent--Liturgy1
- Aesop's fables1
- Affinity (Law)1
- Agnes, Saint, Martyr1
- Alban, Saint, -304?1
- Albigenses1
- Albums (Books)1
- Alchemy--Bibliography1
- Alcuin, 735-8041
- Alcuin, 735-804. Correspondence1
- Aleramo, Marquis of Monferrato, -9671
- Alexander Balas, King of Syria, -145 B.C.1
- Alexander, de Villa Dei. Doctrinale puerorum1
- Alum tawed thongs (Bindings)1
- Ambrose, Saint, Bishop of Milan, -3971
- Ambrosian rite (Catholic Church)1
- Amelius, Martyr1
- Amicus, Martyr1
- Andria (Terence)1