by Albert Thomas Schuler, Alex L. Shigo, Bruce G. Hansen, C. H. Pham, Charles O. Rexrode, David A. Gansner, Edward Lee Adams, Floyd G. Timson, Frederick H. Berry, H. Clay Smith, H. J. Plumley, Harry T. Valentine, J. N. Kochenderfer, Jack H. Barger, John D. Wollam, Johnson Parker, Keith F. Jensen, Lawrence D. Garrett, Leland F. Hanks, Leon S. Dochinger, Neil I. Lamson, Owen W. Herrick, Paul E. Sendak, R. A. Lautenschlager, R. E. Leonard, Raymond E. Graber, Ronald C. Wilkinson, Ronald E. Coleman, Russell S. Walters, Ted J. Grisez, W. P. Lima, William B. Leak, William J. Gabriel, William N. Cannon, A. M. Whitney, C. H. Kircher, Charles J. Gatchell, Daniel E. Dunmire, Donald F. Thompson, Frances Foust Lombard, Frederick W. Bender, H. T. Peet, Harry Wolodymyr Yawney, Howard G. Halverson, James H. Patric, Stanford L. Arner, William G. Yendol, Franklin B. Lewis, Gordon M. Heisler, J. D. Podgwaite, Nicholas Holowaychuk, William B. White

1977

by Frank G. Hawksworth, Franklin W. Martin, Frederick Joseph Hermann, Glenn W. Peterson, Keith William Dorman, Leon K. Edmunds, William Lin

1976

by Albert Thomas Schuler, Alex L. Shigo, Charles Hrach Wolf, Clayton M. Carl, David L. Sonderman, Donald E. Hilt, E. Paul Craft, Everette D. Rast, Franklin B. Lewis, H. Clay Smith, Hugh W. Reynolds, Jeffrey L. Wartluft, John C. Bjorkbom, John E. Baumgras, Keith F. Jensen, L. R. Auchmoody, Leland F. Hanks, Neil K. Huyler, Peter W. Garrett, Philip A. Araman, R. E. Leonard, Robert M. Frank, Roger E. McCay, Ronald C. Wilkinson, Silas Little, Thomas A. More, Wilbur F. LaPage, Barton M. Blum, Charles J. Gatchell, David A. Gansner, Gerald Leon Cole, Gilbert P. Dempsey, Gregory J. Buhyoff, Herbert E. Echelberger, James G. Schroeder, John J. Mohr, John Robert Donnelly, Lawrence D. Garrett, Martin E. Dale, Michael L. McManus, Robert L. Brisbin, Walter Basil Wallin, Noel F. Schneeberger, Boyd W. Post, Donald E. Dorn, John J. Padalino, Michael Schnitzer, Paul S. DeBald

1978