- 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
- Charles William Collinson, Daniel L. Deadmore, James C. Bradbury, John Chapman Frye, Lyle David McGinnis, Richard Henry Howard, Robert Louis Eissler, Thomas Gregory Perry, Walter Edward Parham, Wayne Arthur Pryor, Willis L. Busch, Herbert David Glass, James Stewart Machin, John Paul Kempton, Harold Bowen Willman
· 1961
- David Henry Swann, Donald Lee Graf, Douglas A. Block, Emile Desire Pierron, Glenn Charles Finger, Harold Wesley Jackman, James Mansfield Cleary, James Watson Baxter, John Albert Harrison, John Chapman Frye, Richard Charles Anderson, Thomas William Smoot, Walter Edward Parham, Walter Rose, Walter Voskuil, Wayne Franklin Meents, William Arthur White, Willis L. Busch, Harold Bowen Willman, Herbert David Glass, Orin Wainwright Rees
· 1959