Former Owner
- Cornelius John Hauck1
- Count Johann Nepomuk Wilczek1
- Couvent des pères Franciscains (Monte-Carlo, Monaco)1
- Cox Macro1
- Craven Ord1
- Cristoferus Chrewczer1
- Curt H. Reisinger1
- Cyrus Adler1
- D. Manning1
- Dahīʹzādah1
- Dame Margery Byrkenhed1
- Damiano Muoni1
- Daniele Florio1
- Darvīsh Aḥmad Khākiyānī1
- David Gordon Lyon1
- David Pulsifer1
- David Swan1
- Dean Putnam Lockwood1
- Deighton, Bell, & Company1
- Diego Clemencín1