- Medici, Bernardo de'1
- Medici, Carlo Bernardo Alamanni de'1
- Medici, Elisabetta de'1
- Medici, Fernando de'1
- Medici, Giulio de'1
- Medici, Nicolo de'1
- Medicinal plants1
- Medicine, Magic, mystic, and spagiric1
- Medicine, Medieval1
- Medicine--Formulae, receipts, prescriptions1
- Medicine--Study and teaching1
- Medina Sidonia, Alonso Pérez de Guzmán, duque de, 1550-16191
- Medina Sidonia, Juan Alonso de Guzmán, Duque de, -15581
- Medina, Francisco de, 1544-16151
- Megilat Purim al Miṣriyin1
- Meistersinger1
- Melanchthon, Philip, 1497-1560. De officio principum1
- Mexico1
- Mexico--Culhuacán1
- Middle East--Jerusalem1