Samuel Henry Ayers

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

Samuel Henry Ayers, William Trimble Johnson, Brayton Howard Ransom, Harry M. Lamon, Roscoe Hart Shaw, Clarence Henry Eckles, Dan T. Gray, Winthrop Davenport Foster, C. L. Opperman, W. F. Ward

Samuel Henry Ayers, Paul Wescoe Clemmer

United States. Department of Agriculture, Samuel Henry Ayers, W. T.(Jr.) Johnson

Samuel Henry Ayers

Samuel Henry Ayers, William Trimble Johnson

Charles Dwight Marsh, Alexander Wetmore, Norman Eugene McIndoo, Thompson Elwyn Woodward, Frank Rabak, Frederick Storrs Baker, William Ransom Meadows, William Gardiner Blair, George Durward Smith, Ralph Hoagland, A. B. Clawson, Harrison Morton Dixon, Raymond Secord Washburn, Samuel Henry Ayers, Arnold Orlando Dahlberg, Brayton Howard Ransom, Carl Hartley, Charles Franklin Creswell, Clarence William Kitchen, Clinton Gold Smith, Edouard Horace Siegler, Edward Browning Meigs, George Arthur Bell, Harry Taylor Edwards, Howard Ross Tolley, James Houston Shrader, Joseph Martin Mehl, Martin Reese Cooper, Edward M. Seifert, George Leslie Bidwell, H. S. Garner, J. M. Purdom, John Oscar Williams, Lillian M. Church, Paul Wescoe Clemmer, Mary B. Hall

Samuel Henry Ayers, William Trimble Johnson