- Letters, Papal1
- Liebfrauenkirche (Halberstadt, Germany)1
- Liturgics5
- Local officials and employees--Salaries, etc.1
- Lollards1
- Ludwig IV, Holy Roman Emperor, 1282?-13471
- Magnificat (Music)1
- Manicules1
- Manuel I, King of Portugal, 1469-15211
- Manuscripts3
- Manuscripts, Arabic1
- Manuscripts, Catalan1
- Manuscripts, European2
- Manuscripts, French4
- Manuscripts, German6
- Manuscripts, Italian2
- Manuscripts, Latin26
- Manuscripts, Latin (Medieval and modern)11
- Manuscripts, Medieval13
- Manuscripts, Portuguese1