Former Owner
- Benediktinerinnenabtei St. Walburg1
- Bernard Quaritch1
- Bertram Ashburnham, 4th Earl of Ashburnham1
- Betty Freudenheim1
- Beverly Chew1
- Bill Ward1
- Birgittinessenklooster Mariënwater1
- C Traylen Bookshop1
- Catherine de' Medici1
- Caxton Club1
- Chapelle du monastère du Carmel de Nantes1
- Charles Butler1
- Charles Kothen1
- Charles Lormier1
- Charles Sessler1
- Charles-Adrien Picard1
- Charles-Gilbert Morel de Vindé1
- Charlier de Namur1
- Chartreuse de Val-Saint-Esprit1
- Chasseigne family1