- Watts, William (William A.), 1930-20106
- Wolff, J.F., Sr.6
- Wright, Herb E., Jr.6
- Baadsgaard, Halfdan5
- Goldich, Samuel S., 1909-5
- Harder, E.C.5
- Hemstad, Chris B.5
- Hoffman, J. H. (John H.)5
- Ikola, Rodney J.5
- Johnston, A. W. (A. Walfred)5
- Krueger, Harold W.5
- McGinnis, Lyle D. (Lyle David), 1931-20175
- Nier, Alfred O. (Alfred Otto), 1911-19945
- Peterson, Dean M.4
- Prokopovich, N. P. (Nikola P.)4
- Soper, Edgar Kirke, 1886-4
- Winchell, N. H. (Newton Horace), 1839-19144
- Alexander, Scott C. (Geologist)3
- Berg, James A.3
- Goebel, Joseph E.3