Names
- Irwin, John B.1
- Johnson, Harold L. (Harold Lester), 1921-1980.1
- Johnson, Harold Lester, 1921-1
- Jordan, David Starr, 1851-1931.1
- Keller, Geoffrey, 1918-1
- Kemble, Edwin C. (Edwin Crawford), 1889-1
- Klopsteg, Paul E. (Paul Ernest), 1889-1
- Klopsteg, Paul Ernest, 1889-1
- Lamont-Hussey Observatory (University of Michigan)1
- Lee, Gilbert Lamont, 1919-1
- Lick Observatory.1
- Maxwell, Allen Douglas.1
- Mayall, N. U. (Nicholas Ulrich), 1906-1993.1
- Mayall, Nicholas Ulrich, 1906-1
- McLaughlin, Dean B. (Dean Benjamin), 1901-1965.1
- McMath Solar Telescope.1
- McMath, Robert Raynolds, 1891-1962.1
- McMath-Hulbert Observatory (University of Michigan)1
- Meinel, Aden B.1
- Menzel, Donald H. (Donald Howard), 1901-1976.1