- Lemos, Pedro Fernández Ruiz de Castro y Osorio, conde de, active 17th century1
- Lenzi family1
- Lippomano, Luigi, 1500-15591
- Liturgics--Texts1
- Local government--Law and legislation1
- Lombards1
- Lord's Supper1
- Louis IX, King of France, 1214-12701
- Love poetry, Classical1
- Madrigals, Italian1
- Magi1
- Malatesta family1
- Malatesta, Sigismondo Pandolfo, signore di Rimini, 1417-14681
- Manners and customs1
- Manuscript maps1
- Manuscripts, English1
- Manuscripts, French1
- Manzoli, Marchione1
- Maps1
- Marbled paper bindings1