Former Owner
- 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
- Craven Ord1
- Cristoferus Chrewczer1
- Curt H. Reisinger1
- Cyrus Longworth Lundell1
- César de Missy1
- D. Andreas Parisino1
- D. D. Horatius Bosner1
- D. Justin McCann1
- D. Manning1
- Dadabhoy Framji Rustamji Darabji1
- Dahīʹzādah1
- Dame Margery Byrkenhed1
- Damiano Muoni1
- Dana Hill1
- Daniel Itzig1
- Daniel Sperber1
- Daniele Florio1