Former Owner
- Petrus Hofstede1
- Philip C. Duschnes Rare Books & First Editions1
- Pierre Pithou1
- Poor Clares1
- Quinton Edward Gurney1
- Richard Priestley1
- Robert Hoe III1
- Robert Lyle1
- Rudolf Busch1
- Rush Hawkins1
- Saint-Amand Abbey1
- Saluti, Tomasso, active 20th century1
- San Barnaba Church1
- Sonnyng, John1
- Sonnyng, William1
- That Guy with the Books1
- Theodore Parker1
- Thomas Gage1
- Thomas Wall1
- Thomas Woodward1