- Leo XI, Pope, 1535-16051
- Lion hunting1
- Lippomano, Luigi, 1500-15591
- Logic1
- Lorenzo, Giovanni Battista di1
- Louis XII, King of France, 1462-15151
- Lutheran Church1
- Lutheran Church--Controversial literature--Catholic authors1
- Magnificat (Music)1
- Malatesta family1
- Malatesta, Sigismondo Pandolfo, signore di Rimini, 1417-14681
- Mancini, Girolamo, 1832-19241
- Manuele, Luigi1
- Manuscript fragments1
- Manuscript maps1
- Manuscripts, Catalan1
- Manuscripts, Dutch1
- Manuscripts, Greek (Medieval and modern)1
- Manuscripts, Medieval1
- Manuscripts, Turkish1