Former Owner
- Bernardo Mendel1
- Bet din tsedeḳ London ṿeha-medinah1
- Birch & Son1
- Boies Penrose II1
- Bonaventura Brem1
- Branners Bibliofile Antikvariat1
- Bruce P. Ferrini1
- Burg Kreuzenstein1
- Caesareum Societatis Jesu Collegium Viennense1
- Charles Burr1
- Charles D. Humberd1
- Charles F. Gunther1
- Charles Singer1
- Charles Thomas-Stanford1
- Chartreuse Saint-Sixte de Rettel1
- Christian Hertzig1
- Christophorus de Stinglhaim1
- City College of New York1
- Comte d'Aspremont-Lynden1
- Count Johann Nepomuk Wilczek1