- Medici, Lorenzo di Pierfrancesco de', 1463-15031
- Medici, Raffaele de'1
- Medici, Vanne de'1
- Medicinal plants4
- Medicine32
- Medicine, Ancient1
- Medicine, Arab5
- Medicine, Greek and Roman--Manuscripts1
- Medicine, Magic, mystic, and spagiric1
- Medicine, Medieval14
- Medicine--Formulae, receipts, prescriptions3
- Medicine--Study and teaching1
- Meditations10
- Mediterranean Region2
- Mediterranean Sea13
- Mediterranean Sea--Aegean Sea1
- Mehmed II, Sultan of the Turks, 1432-14811
- Mekhilta of Rabbi Ishmael1
- Mellini, Piero1
- Memory1