Former Owner
- Coggeshall Abbey1
- Compagnia della Purificazione di Maria e di San Zanobi1
- Compagnia della Vergine Maria (Cento, Italy)1
- Comte André de Riaucourt1
- Comte Chandon de Briailles1
- Comte d'Aspremont-Lynden1
- Condat Abbey1
- Conradus Eerens1
- Constance de Foix1
- Convent San Marco1
- Convent of San Domenico1
- Convento di San Giusto alle Mura1
- Convento di San Paolo1
- Cordwainer Smith1
- Cornelius John Hauck1
- Cosimo de' Medici1
- Count Alexis de Golowkin1
- Couvent des Minimes (Clermont-Tonnerre, France)1
- Couvent des pères Franciscains (Monte-Carlo, Monaco)1
- Cover of a binding, illegible on what was the outer side.1