Charles Walter Collins

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

Herbert Sinclair Fairbank, Charles Dwight Marsh, John Chambers McDowell, Thornton Taft Munger, Charles Walter Collins, E. A. McGregor, A. B. Clawson, Warren Fales Draper, Jason L. Merrill, Samuel Henry Ayers, William Trimble Johnson, Clarence William Kitchen, Thomas Henry Jones, Hadleigh Marsh, Herbert Hager Mowry, Warren Clemmer Funk, Frank Cummings Cook, Francis Burzley Milliken, Albert Franklin Burgess, John T. Bowen, Lyster Hoxie Dewey, William H. White, Otto William Schleussner, Fred Hebard Hillman, Harold Nelson Humphrey, William Henry Waggaman, Carl William Thompson, George Asbury McMurdo, Howard Archibald Turner, James Edmund Pennybacker, John Frank Strauss, John Regester Humphrey, United States. Office of Public Roads, Frank Lawrence McDonough, Robert Harris Hutchison, William Bohler Walker, William Horace Kerr

United States. Department of Agriculture, Emil George Boerner, Thompson Elwyn Woodward, R. W. Leukel, Stephen Harold Hastings, Albert Ronald Merz, Frank Heidtman Lathrop, Charles Walter Collins, Clarence Luther Forsling, George Thomas Ratliffe, Royal Joyslin Haskell, William Adams Dayton, T. Ralph Robinson, Raymond Chesman Brown, George Arceneaux, Walter Tennyson Swingle, Beyer Aune, Owen Edward Williams, Sumner Augustus Hall, I. E. Stokes, Irvin Milburn Atkins, Lyster Hoxie Dewey, Wilbur Clifford Edmundson, David Breese Jones, F. E. Staebner, Glenn Arthur Cumings, Godfrey Leonard Alvin Ruehle, Hastings Newcomb Bartley, Jacquelin Smith Cooley, Joseph Benjamin Kuska, L. B. Scott, Mayne Reid Coe, Charles MacFarlane Brewer, Clifford E. Hood, Jesse Harold Crenshaw, Lawrence Clayton McAlister, Edward Morris Savage, Ralph Brownson Bisland

Charles Walter Collins, James Munday Walter, Curtis May

John William Roberts, Milton Henry Fohrman, Thompson Elwyn Woodward, R. W. Leukel, William John Nolan, Arthur Koehler, John Brown Cuno, John Clymer Dunegan, Charles Walter Collins, Hazel Katherine Stiebeling, Aaron Francis Bracken, Joshua John Skinner, Willis James Nolan, R. R. Graves, Herbert Dwight Smith, John Holmes Martin, John Robert Magness, Mark Hughlin Haller, Edward Coit Peck, David Edmund Stephens, Ernest Bateman, George William Trayer, James Edward McMurtrey, John Guice Sutton, Joseph Clarence Silver, Ralph Lester Miller, Raymond Secord Washburn, T. D. Jarrell, Walter M. Osborn, William Henry Fry, William Jasper Spillman, Carrington Bonsor Williams, Hazel Edith Munsell, Henry Morris Wanser, Ione P. Bassett, James Geere Dickson, James McKenzie Hankins, Samuel Frederick Potts, Aaron Guy Johnson, Fletcher Pearre Veitch, Harvey Blount Mann, William Walter Yothers

United States. Department of Agriculture, Harold Frederick Loomis, John Valentine Schaffner, Robert Claude Wright, Oscar Roland Mathews, Archibald Dixon Shamel, Chalmers Jackson King, George Wright Hoffman, Carl Stone Pomeroy, Neil E. Stevens, Benjamin Ralph Stauber, Charles Walter Collins, Fred Earl Keating, Hazel Katherine Stiebeling, Mary E. Sweeny, Walter Cochran Davis, Charlotte Chatfield, Ruth Leah Morgan, Thomas Moore Whiteman, A. J. Pieters, Charles Sidney Leete, F. M. Grant, Frederick John Pritchard, Frederick Wulling Herbert, George McMillan Darrow, Harry Eugene Burke, Harvey John MacAloney, Herman Meserve Johnson, Orville Edward May, Perley Spaulding, Clarence Elbert Clement, George Fordyce Waldo, Horace Terhune Herrick, James Warren Hubbard, John Raymond Hansbrough, Louis Henry Burgwald, Verner Ivan Clark, William Solomon Porte, Frank Nelson Harmon

Harold Frederick Loomis, John Valentine Schaffner, Robert Claude Wright, Chalmers Jackson King, George Wright Hoffman, Adrian John Pieters, Benjamin Ralph Stauber, Charles Walter Collins, Fred Earl Keating, Hazel Katherine Stiebeling, Mary E. Sweeny, Walter Cochran Davis, Charlotte Chatfield, Ruth Leah Morgan, Thomas Moore Whiteman