E. A. McGregor

Fred Corry Bishopp, Samuel Mills Tracy, Carleton Roy Ball, Jacob Allen Clark, H. P. Gould, George McMillan Darrow, Perley Spaulding, John F. Ross, E. A. McGregor, Roland McKee, Furman Lloyd Mulford, C. L. Marlatt, Samuel Henry Ayers, John June Davis, Curtis Hernon Kyle, Helmer Rabild, George McMonies Hunt, Emanuel Alexandrovich Goldenweiser, William Randolph Walton, James Stuart Ball, Edmund H. Gibson, N. C. Donaldson, George Barkley Taylor, Herbert Perry Davis, Oliver Joseph Grace, Walton Kirk Brainerd

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

E. A. McGregor

David Griffiths, Dan Hansen, United States. Department of Agriculture, Wells Aleck Hutchins, George W. Barber, Victor Nelson Valgren, Charles Henry Thompson, Arthur Edgerton Seamans, David A. Savage, Arthur T. Sweet, Benjamin Yoe Morrison, Clarence Luther Forsling, E. A. McGregor, Edgar Brown, Edward Frank Snyder, Elmer W. Knight, Ernst H. Wiecking, Franklin Elmer Allison, George Pelham Walton, George Thomas Ratliffe, Hans Weller Hochbaum, Helnut Charles Diehl, Horace Branson Cowgill, James Richard Quesenberry, Jess Richard Dilley, Robert Normal Wilson, Thomas William Heitz, William Williams Gilbert, Earle V. Storm, Eben H. Toole, Fred Campbell Meier, Robert Franklin Gardiner, William Lukens Edwards, Willard Levi Goss