- Lord's Supper--Adoration1
- Love poetry, Latin (Medieval and modern)1
- Love songs1
- Lute music1
- Malatesta family1
- Malatesta, Sigismondo Pandolfo, signore di Rimini, 1417-14681
- Mancini, Girolamo, 1832-19241
- Manuscript waste (Binding)1
- Manuscripts, Catalan1
- Manuscripts, English1
- Manuscripts, German1
- Manuscripts, Greek (Medieval and modern)1
- Manuscripts, Medical1
- Marbled paper bindings1
- Marriage (Canon law)1
- Marriage (Canon law)--Dispensations1
- Marriage law1
- Marshals1
- Martini, Luca, 1980-1
- Marucelli, Benedetto1