Former Owner
- Nicholas Bacon1
- Otto Orren Fisher1
- Peter Le Neve1
- Peterborough Central Library1
- Philip Carteret Webb1
- Philip Kerr, 11th Marquess of Lothian1
- Phillip J. Pirages Fine Books & Manuscripts1
- Phyllis Walter Goodhart Gordan1
- Prince Augustus Frederick, Duke of Sussex1
- Ralph Thoresby1
- Ralph Verney, 1st Earl Verney1
- Reading Abbey1
- Reginald Cholmondeley1
- Richard Farmer1
- Richard Greene1
- Richard Halter1
- Richard Hooker1
- Richard Legh1
- Richard Linenthal1
- Richard Maria Domville1