- Paul IV, Pope, 1476-15591
- Peasant uprisings1
- Peasants' War (1524-1525)1
- Pelayo, King of Asturias, -7371
- Penmanship1
- Penmanship manuals1
- Penmanship, German1
- Perez Barahona, Juan, active 1560-15621
- Persecution1
- Persian language--Rhetoric1
- Persian language--Versification1
- Peru (Viceroyalty). Real Caja de Cuzco1
- Pesciori, Guglielmo1
- Philippines1
- Philippines--Manila1
- Philosophy1
- Physics1
- Physics (Aristotle)1
- Piccolomini family1
- Piccolomini, Alfonso di Giacomo d'Antonio Maria, duca di Montemarciano1