- Ludwig IV, Holy Roman Emperor, 1282?-13471
- Lutheran Church2
- Lutheran Church--Controversial literature1
- Lutheran Church--Controversial literature--Catholic authors1
- Magic--Religious aspects--Christianity1
- Magnificat (Music)1
- Manicules1
- Manners and customs2
- Manuel I, King of Portugal, 1469-15211
- Manuscript fragments19
- Manuscript waste64
- Manuscripts132
- Manuscripts, Arabic10
- Manuscripts, Cakchikel1
- Manuscripts, Catalan2
- Manuscripts, Dutch10
- Manuscripts, English2
- Manuscripts, English (Middle)2
- Manuscripts, European12
- Manuscripts, French16