- Medici, Vincenzo de'4
- Medicinal plants2
- Medicine6
- Medicine, Arab12
- Medicine, Magic, mystic, and spagiric3
- Medicine, Medieval3
- Medicine, Medieval--Manuscripts1
- Medicine, Persian1
- Medicine, Popular1
- Medicine--Formulae, receipts, prescriptions2
- Medicine--Study and teaching2
- Medina Sidonia, Alonso Pérez de Guzmán, duque de, 1550-16191
- Medina Sidonia, Juan Alonso de Guzmán, Duque de, -15581
- Medina, Francisco de, 1544-16151
- Mediterranean Region3
- Mediterranean Sea2
- Meistersinger1
- Mellini, Piero1
- Memorial books (Holocaust)1
- Menasheh ben Asher, a.b.d. ḳ. Ropshits1