- Alexander Wetmore, Arnold Orlando Dahlberg, Brayton Howard Ransom, Carl Hartley, Charles Dwight Marsh, Charles Franklin Creswell, Clarence William Kitchen, Clinton Gold Smith, Edouard Horace Siegler, Edward Browning Meigs, Frederick Storrs Baker, George Arthur Bell, George Durward Smith, Harrison Morton Dixon, Harry Taylor Edwards, Howard Ross Tolley, James Houston Shrader, Joseph Martin Mehl, Martin Reese Cooper, Norman Eugene McIndoo, Ralph Hoagland, Samuel Henry Ayers, William Ransom Meadows, A. B. Clawson, Edward M. Seifert, Frank Rabak, George Leslie Bidwell, H. S. Garner, J. M. Purdom, John Oscar Williams, Lillian M. Church, Paul Wescoe Clemmer, Raymond Secord Washburn, Thompson Elwyn Woodward, William Gardiner Blair, Mary B. Hall
· 1922
- 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