Albert Theodore Goldbeck, Arthur Morrison McCreight, Arthur William Sampson, Charles Elisha Bassett, Dwight Isely, Ernest Adna Back, Ernest Dunbar Clark, Francis David Farrell, Frank Hurlbut Chittenden, George Austin Billings, Harry Oscar Sampson, Jacob Hiram Arnold, John William Roberts, Louis S. Murphy, Louise Stanley, Neil E. Stevens, Orator Fuller Cook, Oscar Bernard Jesness, Philip Luginbill, Philip Vincent Cardon, Prévost Hubbard, Victor Nelson Valgren, William Jasper Spillman, Wilson Popenoe, Beyer Aune, Cyril Eugene Pemberton, Frank Herbert Jackson, George G. Ainslie, Leslie MacNaughton, Neale F. Howard, Raymond Boorman Wilcox, William Horace Kerr · 1920
And conclusions. pp. 7.
A. J. Pieters, Archibald Dixon Shamel, Benjamin Ralph Stauber, Chalmers Jackson King, Charles Sidney Leete, Charles Walter Collins, F. M. Grant, Fred Earl Keating, Frederick John Pritchard, Frederick Wulling Herbert, George McMillan Darrow, George Wright Hoffman, Harry Eugene Burke, Harvey John MacAloney, Hazel Katherine Stiebeling, Herman Meserve Johnson, Mary E. Sweeny, Neil E. Stevens, Orville Edward May, Oscar Roland Mathews, Perley Spaulding, Robert Claude Wright, Thomas Moore Whiteman, United States. Department of Agriculture, Walter Cochran Davis, Carl Stone Pomeroy, Charlotte Chatfield, Clarence Elbert Clement, George Fordyce Waldo, Harold Frederick Loomis, Horace Terhune Herrick, James Warren Hubbard, John Raymond Hansbrough, John Valentine Schaffner, Louis Henry Burgwald, Ruth Leah Morgan, Verner Ivan Clark, William Solomon Porte, Frank Nelson Harmon · 1931
Carl S. Scofield, H. S. Swingle, Alfred Edward Fivaz, Arthur John Ackerman, Brice Edwards, Carl Rohwer, Clarence Ferdinand Korstian, Conde Balcom McCullough, Cornelius Lott Shear, Curtis Paul Clausen, Dow Vawter Baxter, Eloise Gerry, Ernest William Laake, Frank Heidtman Lathrop, Frederick David Richey, Frederick Storrs Baker, Helen Hart, J. R. Holbert, John Clymer Dunegan, M. A. Yothers, Robert Claude Wright, Roger Dearborn Marsden, Thornton Taft Munger, Walter Ernest Fleming, Wells Aleck Hutchins, Albin Leroy Gemeny, Benjamin Koehler, Clarence Bobo Nickels, Dwight Isely, E. R. Van Leeuwen, Francis Everett Baker, George Frederick Sprague, James William Park, L. V. Wilcox, Lake S. Gill, Neil E. Stevens, Oliver I. Snapp, Ruthford Henry Westveld, Warren David Brush, Henry F. Bain, William Roy Wickerham · 1931