Former Owner
- Charles Stephen Ascherson1
- Charles V. Wheeler1
- Charles-Benoit de Campigny1
- Charlier de Namur1
- Chasseigne family1
- Chiswick Book Shop1
- Christian Gottlieb Schwarz1
- Christophorus de Stinglhaim1
- Château d'Anet1
- Clarence S. Bement1
- Claude d'Urfé1
- Clement Griscom1
- Collège Saint-Clément1
- Coluccio Salutati1
- Convent of San Domenico1
- Coppo family1
- Cordwainer Smith1
- Cortlandt F. Bishop1
- Cox Macro1
- Daniele Florio1