Former Owner
- Parke-Bernet2
- Paul Durrieux1
- Payne and Foss1
- Payre-Grolée-Virville family1
- Philip C. Duschnes2
- Philip Milburn10
- Philip Sills1
- Phillip J. Pirages Fine Books & Manuscripts1
- Preston A. Perry1
- Rev. T. Barnes1
- Richard Firth Green1
- Richard Griffith1
- Robert Villareal1
- Robert de Hangest1
- Rodrigo de Abejos1
- Roger Martin1
- Ross R. DeVean1
- Rudolf Graupner1
- Rudolf Hofmeister1
- Rui Garcia1