Former Owner
- Charles Kothen1
- Charles Louis Adelaïde Henri Matheron Curnieu1
- Charles Marriette1
- Charles Singer1
- Charles-Gilbert Morel de Vindé1
- Chartreuse Saint-Sixte de Rettel1
- Claude Augustin de Cosson1
- Clemente Carilli1
- Cornelius John Hauck1
- Cristoferus Chrewczer1
- David McRoberts1
- Dionysiĭ Vasilevich1
- Donaueschingen court library1
- Duncan Beresford-Jones1
- Edmund Newman1
- Edward Cheney1
- Edward Samuel Dewick1
- Edward T. Ross1
- Edwin H. Fetterolf1
- Emiliano Sarti1