Former Owner
- Peter Le Neve1
- Peterborough Central Library1
- Petrus Giraud1
- Philadelphia Museum of Art1
- Philip Carteret Webb1
- Philip III the Good1
- Philip Kerr, 11th Marquess of Lothian1
- Philip Robinson1
- Philippe II de Croÿ1
- Phillip J. Pirages Fine Books & Manuscripts1
- Pierre Fraenkel1
- Pierre Tassel1
- Pietro Giometti1
- Pietro Giuseppe Ignati Mattei Cattochii1
- Pietro Millini1
- Pietro Odescalchi1
- Pius VI1
- Poblet Monastery1
- Poor Clares1
- Prince Augustus Frederick, Duke of Sussex1