Former Owner
- Philip Hofer1
- Philip Hurd1
- Philip Jacob Grangier1
- Philip Kerr, 11th Marquess of Lothian1
- Philip Milburn6
- Philip van Alfen1
- Philippe Hurault de Cheverny1
- Philippe de Béthune1
- Phillip J. Pirages Fine Books & Manuscripts15
- Pierre Gélis-Didot1
- Pierre Picard le Jeune1
- Pius XI1
- Prince Augustus Frederick, Duke of Sussex2
- Québriac family1
- R. A. Godwin-Austen1
- Raoul Léonor Lignerolles1
- Rendell1
- René Antoine Thoué1
- Rev. Frederick Collins Wilson1
- Ricardo, Conde de Benahavis Heredia1