- Italy--Guastalla1
- Italy--Nola1
- Italy--Padua1
- Italy--Prato1
- Italy--Reggio Emilia (Province)1
- Italy--Sicily1
- Italy--Venice1
- Jerome, Saint, -419 or 4201
- John, the Baptist, Saint1
- Kings and rulers--Duties1
- Latin poetry1
- Ludovico Sforza, Duke of Milan, 1452-15081
- Manuscript waste (Binding)1
- Manuscripts, Catalan1
- Manuscripts, Greek (Medieval and modern)1
- Manuscripts, Spanish1
- Martellini, Vincenzio1
- Materia medica1
- Mathematics1
- Medea, consort of Aegeus, King of Athens (Mythological character)1