Edward Bertram Holland, Fred Winslow Morse, George Henry Chapman, Henry James Franklin, Henry Torsey Fernald, Jacob Kingsley Shaw, Joseph Bridgeo Lindsey, William Leonard Doran, Arthur Israel Bourne, John Geddie Archibald, Paul Johnson Anderson, Carlos Loring Beals · 1921
Frank Alfred Hays, Harlan Noyes Worthley, Joseph Bridgeo Lindsey, Lorian Pamelia Jefferson, Paul Johnson Anderson, William Leonard Doran, Albert Vincent Osmun, Carlos Loring Beals, John Geddie Archibald, Locke L. James, Ruby Sanborn · 1923
David Rozman, Frederick Barker Chandler, Herbert George Spindler, James W Callahan, Joseph Harry Rich, Massachusetts Agricultural Experiment Station, William Brigham Esselen, William Leonard Doran, Arthur Sidney Levine, George H. Sisterhenm, Ruth Elizabeth Sherburne · 1957
Adrian Herve Lindsey, Arthur Bishop Beaumont, Frank Alfred Hays, Henry Van Roekel, Massachusetts Agricultural Experiment Station, Merrill Jasper Mack, Warren Draper Whitcomb, William Leonard Doran, Carl Raymond Fellers, Hubert William Yount, Ruby Sanborn · 1932
Arthur Bishop Beaumont, Edward Bertram Holland, Frank Alfred Hays, Harold Everett White, Lawrence Southwick, Massachusetts Agricultural Experiment Station, Ralph L. France, William George Colby, William Leonard Doran, Jacob Kingsley Shaw, Walter Stuntz Ritchie · 1940
Frank Alfred Hays, Jacob Kingsley Shaw, James Everard Fuller, Karol J. Kucinski, Lawrence Southwick, Massachusetts Agricultural Experiment Station, Warren Draper Whitcomb, William Leonard Doran, Arthur P. French, Emil Frederick Guba, John Searls Bailey, Walter Samuel Eisenmenger · 1943
