- Liturgical books2
- Love2
- Madrigals, Italian2
- Manuscripts, English2
- Maritime law2
- Mary, Queen of Scots, 1542-15872
- Medici, Bernardo d'Alamanno de'2
- Medici, Lorenzo de', 1449-14922
- Medici, Luisa de'2
- Medicine, Magic, mystic, and spagiric2
- Mediterranean Region2
- Monasticism and religious orders for women--Rules2
- Montedoglio (Italy)2
- Morocco bindings2
- Morso family2
- Musical notation2
- Mysticism--Catholic Church2
- Naselli family2
- Ospedale di San Bartolomeo (Florence, Italy)2
- Papal nuncios2