Former Owner
- Paolo Gallo1
- Paul Gottschalk1
- Paul Sabatier1
- Petrus Hofstede1
- Philip C. Duschnes Rare Books & First Editions1
- Pierre Pithou1
- Poor Clares1
- Prediger (Schwäbisch Gmünd)1
- Richard Heber1
- Richard Priestley1
- Robert Hoe III1
- Robert Lyle1
- Rudolf Busch1
- Saint-Amand Abbey1
- Samuel H. Putnam1
- San Barnaba Church1
- Strozzi family1
- Theodore Parker1
- Thomas FitzRoy Phillipps Fenwick1
- Thomas Gage1