- Kings and rulers--Duties2
- Knowledge, Theory of2
- Latin language, Medieval and modern2
- Latin language--Synonyms and antonyms2
- Letter writing2
- Letters patent2
- Liturgical books2
- Luca, Jacopo di2
- Manners and customs2
- Manuscripts, English (Middle)2
- Manuscripts, Nahuatl2
- Manuscripts, Provençal2
- Martini, Cornelia2
- Martini, Giovanni2
- Martini, Roberto2
- Medea, consort of Aegeus, King of Athens (Mythological character)2
- Medici, Alamanno de'2
- Medici, Giovanni de'2
- Medicine--Formulae, receipts, prescriptions2
- Mediterranean Region2