- Legenda aurea (Jacobus, de Voragine)1
- Lenzi family1
- Leo III, Pope--Enchiridion.1
- Leo X, Pope, 1475-15211
- Library catalogs1
- Literature, Medieval1
- Logic, Medieval1
- Lombards1
- Lord's Supper1
- Lord's Supper--Adoration1
- Louis IX, King of France, 1214-12701
- Love poetry, Classical1
- Lucan, 39-651
- Ludwig IV, Holy Roman Emperor, 1282?-13471
- Malatesta family1
- Malatesta, Sigismondo Pandolfo, signore di Rimini, 1417-14681
- Manners and customs1
- Manuscripts, French1
- Manuscripts, Greek (Medieval and modern)1
- Manuscripts, Yiddish1