- 218 B.C.-1516 A.D.1
- 218 B.C.-414 A.D.1
- 414-15991
- 500-15001
- 58 B.C.-1789 A.D.1
- 711-16991
- Abravanel, Isaac, 1437-15081
- Actions and defenses1
- Administration1
- Aeneis (Virgil)1
- Aggada1
- Agustín, Antonio, 1517-1586. Dialogos de medallas inscriciones y otras antiguedades1
- Alba, Fernando Alvarez de Toledo, duque de, 1507-15821
- Albigenses1
- Alchemy1
- Alchemy--Manuscripts1
- 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