Former Owner
- Raphael Nathan Nata Rabinowitz1
- Raphael de Mediolano1
- Raṅganātha Marāṭhe (Son of Mayūreśvara)1
- Reading Abbey1
- Reiss & Son1
- Renzo Rizzi libri antichi1
- René Antoine Thoué1
- René Henry1
- Rev. Frederick Collins Wilson1
- Rev. J. Duncalf1
- Ricardo Enrico de Wilde1
- Ricardo, Conde de Benahavis Heredia1
- Richard Ashurst Bowie1
- Richard Blount1
- Richard Farmer1
- Richard Graves1
- Richard Greene1
- Richard Halter1
- Richard Henry Wilde1
- Richard Hooker1