- Liturgical books1
- Liturgics1
- Logic1
- Lorraine, Nicolas-François, duc de, 1609-16701
- Manuel I, King of Portugal, 1469-15211
- Manuele, Luigi1
- Manuscripts2
- Manuscripts, Arabic1
- Manuscripts, English1
- Manuscripts, Hebrew1
- Manuscripts, Italian1
- Manuscripts, Latin9
- Manuscripts, Latin (Medieval and modern)4
- Manuscripts, Medieval2
- Manuscripts, Portuguese1
- Manuscripts, Renaissance8
- Manuscripts, Spanish4
- Manuscripts, Turkish1
- Maria Anna Josefa, Queen, consort of John V, King of Portugal, 1683-17541
- Massachusetts--Wellesley1