Title
- Liturgical texts5
- Liturgical verse2
- Llangattock Breviary2
- Machzor1
- Manipulus curatorum1
- Manual1
- Mass of the Virgin1
- Maḥzor3
- Maḥzor for the High Holidays; rite of Yemen1
- Medieval manuscript fragment18
- Miscellany6
- Missal158
- Music2
- New Testament1
- Octoechos1
- Office2
- Office of the Dead4
- Office of the Mother of God1
- Office of the Virgin1
- Offices2