- Breviary (Benedictine : Catholic Church)1
- Brocade bindings1
- Brudenell family1
- Bulls, Papal1
- Business ethics1
- Byzantine Empire1
- Byzantine chants1
- Bēssariōn, Cardinal, 1403-14721
- Caesarius, of Arles, Saint, 470?-5421
- Calendars of saints1
- Canonists1
- Carrillo family1
- Carrillo, Pedro, -approximately 1436--Family1
- Cartularies1
- Cathedral bindings1
- Catherine, of Siena, Saint, 1347-13801
- Catholic Church. Archdiocese of Pesaro (Italy)1
- Catholic Church. Ordo divini officii (Archdiocese of Mainz : Rhineland-Palatinate, Germany)1
- Centerpiece and cornerpiece bindings1
- Chained books1