- Alfonso X, King of Castile and Leon, 1221-12841
- Allegories1
- Alvarez family1
- Annals and chronicles1
- Annotations1
- Anthologies1
- Augustine, of Hippo, Saint, 354-4301
- Austria1
- Autographs1
- Batista de Lanuza y Tafalla, Miguel, -1659. Vida de la venerable Madre Geronima de San Estevan1
- Batista de Lanuza y Tafalla, Miguel, -1659. Vida de la venerable madre Feliciana de San Ioseph1
- Battle of Covadonga (Covadonga, Spain : 718)1
- Beards1
- Benavides family1
- Benefices, Ecclesiastical1
- Bible. Old Testament1
- Blaeu, Willem Janszoon, 1571-1638. Teatrum orbis terrarum1
- Bucolica (Virgil)1
- Callistus II, Pope, -11241
- Cardona, Catalina de, 1519-15771