Robert Hibbs Peebles

United States. Department of Agriculture, Jacob Martin Lutz, Oscar Roland Mathews, John Ira Hardy, Albert Ronald Merz, Thomas Elliott Snyder, James Zetek, Carl Rohwer, Charles Walter Collins, James Munday Walter, George McMillan Darrow, C. C. Plummer, B. L. Wade, Robert Hibbs Peebles, John Raymond Horton, John Henry Zeller, H. O. Hetzer, Curtis May, Arnon Lewis Mehring, Clyde William Doran, James F. Bullock, Jesse Roy Christie, Joseph Franklin Brandon, Lawrence Paul Batjer, Mark Matthew Regan, Michael Hendrix Langford, Thomas Earle Smith, Wylie Daniel Goodsell, Bailey Edgar Brown, Elmer Thomas Jones, Eugene Grissom Moss, Fred A. Clarenbach, Grace P. Vincent, Harold Jeffers Fulton, Harold William Wolf, John Thomas Cassady, Albert Rudolph Johnson, Francis Marion Wadley

Thomas Henry Kearney, Robert Hibbs Peebles

United States. Department of Agriculture, James William Park, William Henry Black, Hazel Katherine Stiebeling, Verner Ivan Clark, Erastus Newton Bates, Lela Evangeline Booher, Robert Van Rensselaer Reynolds, Arlo McGrillis Vance, Arnold Kent Balls, B. L. Wade, Clarence Francis Kelly, Earl W. McComas, Frank Shirley Chamberlin, George Haymaker Vansell, Hamilton Paul Traub, Herbert Halden Walkden, John Paul Miller, Ralph Corbin Hall, Robert Hibbs Peebles, Roger Ulysses Swingle, Russell Rutherford Whitten, W. A. Douglas, Walter Jay Hall, William Doyle Reed, Albert Halsey Pierson, Archie Hugh Madden, Burwell Britt Powell, Eva R. Hartzler, Jesse Wilburn Ingram, John Paul Vinzant, Malcolm Ernest Smith, Marian William Hazen, Sadye Frances Adelson, T. Ralph Robinson, Elizabeth Margaretta Hewston, Ennis C. Blake, Harold Edwin Stevens, James Edwin Comfort