Encyclopedias, Almanacs, Transcripts, and Maps
- Lyttelton, Edith (ca. 1865-1948)
- M'Indoe, John B. (ca. 1936)
- M. A., Oxon
- M. Robert Stenuit
- Ma Chün
- Ma Yoga Shakti International Mission
- Maa-Kheru
- Maarten Schmidt
- Macaques
- Macaques
- MacDonell, Herbert Leon
- Machado-Joseph Disease
- Machell, Reginald Willoughby (1854-1927)
- Machine Vision
- Machine Vision
- Macionica
- Mackenzie, Kenneth R(obert) H(enderson)(1833-1886)
- Mackenzie, William (1877-?)
- Mackey, Albert Gallatin (1807-1881)
- MacLeod, Fiona