Encyclopedias, Almanacs, Transcripts, and Maps
- Mungo Park
- Mungo Park's African Adventures
- Munnings, Frederick T(ansley) (ca. 1928)
- Muon, Discovery of
- Murchison, Roderick (1792-1871)
- Murder vs. Manslaughter
- Murdoch, Iris
- Murphy, Gardner (1895-1979)
- Murphy-Lydy, Mary (ca. 1870-?)
- Murray B. Bornstein
- Murray Llewellyn Barr
- Murray, Margaret A(lice) (1863-1963)
- Murray, Robert (1919- )
- Muscle Reading
- Musès, C(harles) A(rthur) (1919-)
- Museum of Magic and Witchcraft
- Museums of Science and Technology
- Music and the Mechanical Arts
- Muskoxen
- Muskoxen