Former Owner
- Philip Kerr, 11th Marquess of Lothian1
- Philip Milburn1
- Phillip J. Pirages Fine Books & Manuscripts1
- Phyllis Walter Goodhart Gordan1
- Quinton Edward Gurney1
- Ralph Ewart Ford1
- Ralph Thoresby1
- Ralph Verney, 1st Earl Verney1
- Reginald Cholmondeley1
- Rev. T. Barnes1
- Richard Farmer1
- Richard Griffith1
- Richard Halter1
- Richard Heber1
- Richard Hooker1
- Richard Legh1
- Richard Maria Domville1
- Richard Sackville1
- Richard Wroe1
- Robert Elyot1