- Manuscripts, Quiché1
- Manuscripts, Tzutuhil1
- Mary Magdalene, Saint1
- Mary, Blessed Virgin, Saint1
- Mass (Music)1
- Mass--Celebration1
- Medicine, Magic, mystic, and spagiric1
- Mehmed II, Sultan of the Turks, 1432-14811
- Mexico--Chiapas1
- Mexico--Mexico City1
- Mexico--Michoacán de Ocampo1
- Michael (Archangel)1
- Michaelmas1
- Missions1
- Monasteries1
- Monasterio de San Jerónimo de Monte Olivete (Sant Pere de Ribes, Spain)1
- Monasterio de San Jerónimo de la Murtra (Badalona, Spain)1
- Monasterio de San Jerónimo del Valle de Hebrón (Barcelona, Spain)1
- Monastic and religious life of women1
- Morelli, Lorenzo Matteo, active 1480-14811