Former Owner
- Charles Ede1
- 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
- Convent of San Domenico1
- Cordwainer Smith1
- Cortlandt F. Bishop1
- Davis & Orioli1
- Domenico Grimani1
- E. M. Sowter1
- Eberbach Abbey1