- Paper bindings2
- Parva naturalia (Aristotle)2
- Pastoral poetry2
- Paul III, Pope, 1468-15492
- Paul, the Hermit, Saint, -approximately 3412
- Persius2
- Personal correspondence2
- Petrarca, Francesco, 1304-13742
- Petrucci, Pandolfo, 1452-15122
- Pharmacology2
- Philip III, King of Spain, 1578-16212
- Philip IV, King of Spain, 1605-16652
- Philosophers, Ancient--Biography2
- Phlebotomy2
- Piccolomini, Antonio Maria d'Enea2
- Pigments2
- Pilate, Pontius, active 1st century2
- Pius II, Pope, 1405-14642
- Pius IV, Pope, 1499-15652
- Pius V, Pope, 1504-15722