- Manuscripts, Medieval8
- Manuscripts, Renaissance27
- Manuscripts, Spanish1
- Mary, Blessed Virgin, Saint1
- Monasticism and religious orders3
- Monasticism and religious orders for women1
- Morelli, Lorenzo Matteo, active 1480-14811
- Moriscos1
- Papal documents1
- Passion of Jesus Christ1
- Pastoral theology--Catholic Church1
- Penance4
- Penitentials1
- Piccolomini, Enea di Bartolomeo de1
- Piccolomini, Maddalena de1
- Poetry1
- Privileges and immunities, Ecclesiastical1
- Punishment (Canon law)1
- Religious poetry, English1
- Sacraments--Catholic Church3