Names
- McDowell, C. S.1
- McGregor, Tracy William, 1869-1936.1
- McMath, Francis Charles, 1867-1938.1
- McMath, Robert R. (Robert Raynolds), 1891-19621
- McMath, Robert R. (Robert Raynolds), 1891-1962.1
- McMath-Hulbert Observatory (University of Michigan)1
- Menzel, Donald H. (Donald Howard), 1901-1976.1
- Menzel, Donald Howard, 1901-1
- Merrill, Paul W. (Paul Willard), 1887-1
- Merrill, Paul W. (Paul Willard), 1887-1961.1
- Mohler, Orren, 1908-1
- National Science Foundation (U.S.)1
- Nicholson, Seth B. (Seth Barnes), 1891-1963.1
- Nicholson, Seth Barnes, 1891-1
- Norton, William J. (William John), 1883-1975.1
- Odegaard, Charles E.1
- Ormondroyd, J. (Jesse), 1897-1
- Petrie, Robert Methven, 1906-1
- Pettit, Edison, 1889-1962.1
- Pyke, Alfred Joseph, 1880-[remove]1