- Chamberlain, Walter, active 16th century1
- Charles IV, Duke of Lorraine, 1604-16751
- Charts, diagrams, etc.1
- Chiesa di San Giovanni Battista (Gradara, Italy)1
- Choir books1
- Christianity1
- Christianity and other religions1
- Chronologies1
- Chronology, Historical1
- Church history--Middle Ages1
- Church year sermons1
- Cid (Epic cycle)1
- Cid, approximately 1043-10991
- Civil law1
- Clasps1
- Clergy1
- Clergy--Appointment, call, and election1
- Cofradía de la Transfixión de Zaragoza1
- Colonies1
- Colonies--Administration1