Names
- Menzel, Donald Howard, 1901-1
- Merrill, Paul W. (Paul Willard), 1887-1
- Merrill, Paul W. (Paul Willard), 1887-1961.1
- 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
- Peach Mountain Radio Astronomy Observatory (Mich.)1
- Petrie, Robert Methven, 1906-1
- Pettit, Edison, 1889-1962.1
- Portage Lake Observatory (University of Michigan)1
- Pyke, Alfred Joseph, 1880-1
- Pyke, Alfred Joseph.1
- Quarles, Donald Aubrey, 1894-1959.1
- Reynolds, Harrison G.1
- Rice, Warner Grenelle, 1899-1
- Robbins, Frank Egleston, 1884-1
- Rossiter, Richard Alfred, 1886-1