by John B. Sieglinger, Albert Clayton Hunter, Alonzo Bettis Cox, Bennet Allen Porter, Carl Robert Swinson, Conde Balcom McCullough, Cortes Gilbert Randell, D. C. Parman, David Augustus Coleman, Freeman Weiss, H. A. Ross, Harold Morrison, Hylton Roller Brown, James C. Marr, John Charles Phillips, John Franklin Booth, Le Roy August Reynoldson, Leon Howard Worthley, Lewis Herrick Flint, Loren George Polhamus, Oliver I. Snapp, Samuel Fortier, Virgil Verser Parr, William Robin Thompson, Channing W. Harrison, Charles Harold Alden, D. J. Caffrey, George W. Collier, Harold Carter Fellows, Harry French Blaney, Harry Lamont Parker, J. I. Lauritzen, Philip Brierley, Robert G. Hemphill, Gunnar Sigesmund Klemmedson

1928

by Alice Linna Allen Bailey Nightingale, Alonzo Clayton Davis, Arthur William Lindquist, Benjamin Ralph Stauber, Charles Frederick Clark, David Griffiths, Ernest Adna Back, Frank Rabak, Frederick Charles Lincoln, George Arceneaux, Gustaf Adolph Pearson, Harry Lawrence Wilson, Homer Charles McNamara, Hubert Hill Moon, Leon Howard Worthley, Max Raymond Osburn, Olaus Johan Murie, R. Clifford Hall, Roy Magruder, United States. Department of Agriculture, Waldo Lee McAtee, William Doyle Reed, Arthur Clifton McIntyre, Austin Winfield Morrill, Charles W. Culpepper, Frederick James Stevenson, Glen Blaine Ramsey, Houston Vernon Claborn, Joseph William Lipp, Leslie Rushton Hawthorn, Mark Mathew Regan, R. T. Cotton, Robert Theodore Stutts, Walter Van Price, Erskine McFarlane Livingstone, Joseph Stuart Caldwell

1935