- Axel Leonard Melander, Edward Franklin Gaines, Edwin George Schafer, George Alfred Olson, Henry F. Holtz, Sophia Eckerson, State College of Washington. Adams Branch Experiment Station, State College of Washington. Agricultural Experiment Station, William Hislop, Carroll Evan Howell, M. A. Yothers
· 1917
- C. C. Thom, Edwin George Schafer, Fred DeForest Heald, Homer Thomas Darlington, M. A. Yothers, Max Adams McCall, State College of Washington. Agricultural Experiment Station, State College of Washington. Dept. of Dry Land Demonstration and Experiment, Washington Bureau of Farm Development, Edward Franklin Gaines, Henry F. Holtz, Horace Mann Woolman
· 1915
- George Alfred Olson, Harry Baker Humphrey, J. W. Kalkus, Rolla Kent Beattie, Roscoe Wilfred Thatcher, Sofus Bertelsen Nelson, State College of Washington. Agricultural Experiment Station, State College of Washington. Dept. of Dry Land Demonstration and Experiment, Washington Bureau of Farm Development
· 1913
- Charles Cathbert Wright, Chester Druse Schwartze, Chester Leon Vincent, D. J. Crowley, Edwin F. Dummeier, Edwin George Schafer, Edwin Herman Steffen, Elizabeth Neige Todhunter, Fred Lloyd Overley, Frederick John Sievers, H. N. Colby, Harry L. Garver, John Stuart Carver, Leslie John Smith, R. P. Bean, Washington Agricultural Experiment Station, E. L. Overholser, Henry F. Holtz, William A. Luce
· 1926