- Clement VII, Pope, 1478-15341
- Clement VIII, Pope, 1536-16051
- Clusius, Carolus, 1526-16091
- Coen, Caim, active 17th century1
- Collections1
- Colophons1
- Command of troops1
- Conspiracy1
- Constitutions1
- Contemporary bindings1
- Controversial literature1
- Cosimo I, Grand-Duke of Tuscany, 1519-15741
- Council of Trent1
- Courtesy books1
- Criticism, interpretation, etc.1
- Croatia--Dalmatia1
- Customs administration1
- Cynics (Greek philosophy)1
- De' Medici, Luigi, principe di Ottaviano, 1759-18301
- Decorated paper bindings1