Former Owner
- Ramsau Monastery1
- Raoul Chandon de Briailles1
- Raoul Léonor Lignerolles1
- Raphael King1
- Raphael Nathan Nata Rabinowitz1
- Raphael Yitzchak Yisrael1
- Raphael de Mediolano1
- Rashīdī, Ibrāhīm1
- Raymond Oliver1
- Reading Abbey1
- Reginald Cholmondeley1
- Reiss & Son1
- Renzo Rizzi libri antichi1
- René Antoine Thoué1
- René Henry1
- Reuschenberg, Margreta von1
- Rev. Frederick Collins Wilson1
- Rev. J. Duncalf1
- Ricardo Enrico de Wilde1
- Ricardo Herdia, active 18911