- Autos-da-fé1
- 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
- Bookplates1
- Botany1
- Botany, Medical1
- Bucolica (Virgil)1
- Burlesques1
- Calf bindings1
- Callistus II, Pope, -11241
- Cardinals1
- Cardona, Catalina de, 1519-15771
- Caro, Ana1
- Carrillo family1