Former Owner
- Paul Gottschalk1
- Paul de Berthou1
- Peterborough Central Library1
- Petrus Giraud1
- Petrus Jensenius1
- Petrus Ysermans1
- Philip Kerr, 11th Marquess of Lothian1
- René Antoine Thoué1
- Robert H. Sayre1
- Sabin1
- Samuel Whitaker Pennypacker1
- Samuell Bouter1
- Seʻadyah ben Hilel ha-Leṿi1
- Sydney Cockerell1
- T. Royer1
- T. Whitcombe Greene1
- Theodore Newton Vail1
- Thomas Appleby1
- Thomas FitzRoy Phillipps Fenwick1
- Thomas Mildmay1