- Lectionaries1
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- Letters, Papal1
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- Lord's prayer1
- Ludwig IV, Holy Roman Emperor, 1282?-13471
- Manuscripts, Anglo-Norman1
- Manuscripts, Aramaic1
- Manuscripts, Armenian1
- Manuscripts, Provençal1
- Manuscripts, Renaissance1
- Manuscripts, Spanish1
- Marriage (Canon law)1
- Mary, Blessed Virgin, Saint1
- Mary, Blessed Virgin, Saint, in the liturgy--Orthodox Eastern Church1
- Masorah1
- Massachusetts--Northampton1
- Massachusetts--Williamstown1
- Materia medica, Animal1
- Mathematics, Greek1