- Navigation1
- Nicomachean ethics (Aristotle)1
- Oraḥ ḥayim (Karo, Joseph ben Ephraim)1
- Orta, Garcia de, active 16th century1
- Ospedale degli Innocenti (Florence, Italy)1
- Papacy1
- Papal legates1
- Passion of Jesus Christ1
- Passover1
- Passover--Customs and practices1
- Passover--Liturgy1
- Pasteboard1
- Pastoral poetry1
- Paul III, Pope, 1468-15491
- Paul V, Pope, 1552-16211
- Penmanship1
- Personal correspondence1
- Pesciori, Guglielmo1
- Phalaris, Tyrant of Agrigentum, active 6th century B.C.1
- Physical sciences1