Arizona Feed & Fertilizer Control Office, Arthur Theodore Bartel, Elias H. Pressley, Ernest Brooke Stanley, Ned O. Thompson, Philip Greisinger, Ralph Sams Hawkins, Varden Fuller, Alfred Hewlett Walker, Elzer Des Jardines Tetreau, George Wilbert Barr, Ian A. Briggs, Rodney Whitaker · 1939
Aaron Gustave Nelson, Alfred Russell Croft, Faye C. Jones, Lee Street Stith, Robert Lee Voigt, Warner Douglass Fisher, Ellsworth A. Baker, Ray Jay Davis, William C. Whiting, Elias H. Pressley, J. Allen Dunlap · 1967