- Walter Henry Voskuil, Douglas F. Stevens, Gilbert Haven Cady, Alfred Hannam Bell, Bryan C. Parks, Earle F. Taylor, Gail Robert Yohe, George Elbert Ekblaw, George Vincent Cohee, Glen Charles Finger, Gordon W. Prescott, Harold Bowen Willman, James Marvin Weller, James Morton Schopf, James Norman Payne, John Everts Lamar, Louis Cordell McCabe, Morris Morgan Leighton, Ralph Early Grim, Ralph Kent Hursh, Robert Philip Sharp, W. F. Bradley, William Edwards Powers, G. N. Oliver, Adler Enzo Spotti, Carl A. Harman, Charles William Carter, G. W. Land, Harold Rollin Wanless, Myron H. Wilt, Frank Hynes Reed, Orin Wainwright Rees
· 1938
- Chalmer Lewis Cooper, Cullen Warner Parmelee, Frank Emerson Tippie, Harold Bowen Willman, Heinz Adolf Lowenstam, Leland Horberg, Ralph Early Grim, Roy John Helfinstine, Stewart Huntley Folk, Walter Henry Voskuil, Cameron Gerald Harman, Charles C. Boley, Douglas F. Stevens, Frederick Leicester Cuthbert, Nina T. Hamrick, Robert Ramon Reynolds, William Hubert Allaway, Paul Herbert
· 1945
Nordamerika - Geologische Epochen - Geologie - Lake Michigan.
- Richard Henry Howard, Alfred Hannam Bell, David L. Reinertsen, David Lloyd Stevenson, Harold Jay Gluskoter, Harold Wesley Jackman, James C. Bradbury, John Albert Harrison, John Chapman Frye, Kenneth Edward Clegg, Lyle David McGinnis, Merlyn Boyd Buhle, Orin Wainwright Rees, Paul C. Heigold, Richard Charles Anderson, Richard David Harvey, Robert William Orr, William Arthur White, William Hilton Johnson, Willis L. Busch, John E. Brueckmann
· 1964