- Civilization6
- Civilization--Islamic influences1
- Civilization--Jewish influences1
- Clare, of Assisi, Saint, 1194-12534
- Clasp straps1
- Clasps32
- Classical biography1
- Classical dictionaries1
- Classical literature4
- Classification3
- Classification of sciences13
- Clement VI, Pope, approximately 1291-13521
- Clement VII, Pope, 1478-15344
- Clement VIII, Pope, 1536-16051
- Clementinae constitutiones (Catholic Church)2
- Clergy10
- Clergy (Canon law)1
- Clergy--Appointment, call, and election14
- Clergy--Office2
- Clergy--Pensions1