Keywords
- Numerology1
- Oaths1
- Occupations1
- Optics1
- Ordnance--Manufacture1
- Oria, Johannes d'1
- Orso, Saint1
- Orthodox Eastern Church1
- Ospedale degli Innocenti (Florence, Italy)1
- Pamphlets1
- Papal documents1
- Papal legates1
- Parva naturalia (Aristotle)1
- Passion of Jesus Christ1
- Passover--Liturgy1
- Paul III, Pope, 1468-15491
- Paul V, Pope, 1552-16211
- Penitentials1
- Penmanship, Arabic1
- Pesciori, Guglielmo1