by University of Illinois (Urbana-Champaign campus). Engineering Experiment Station, Albert Ernest Roberts Westman, Andrew Irving Andrews, Fred B. Seely, Hardy Cross, Harold Eaton Babbitt, Herbert Fisher Moore, Joseph Albert Polson, University of Illinois at Urbana-Champaign. Engineering Experiment Station, Harry Edward Schlenz, Richard Vernon James, Seichi Konzo, Tibor Ver

1930

by Albert Ernest Roberts Westman, Frank Erwin Richart, Harold Eaton Babbitt, Richard Ernest Gould, Samuel Wilson Parr, University of Illinois at Urbana-Champaign. Engineering Experiment Station, Wilbur M. Wilson, Anton Brandtzæg, Marion I. Levy, Rex Lenoi Brown

1928

by Cullen Warner Parmelee, Harold Eaton Babbitt, Herbert Fisher Moore, Samuel Wilson Parr, Albert E. R. Westerman, Frank Charles Howard, Frederick Guy Straub, Wilbur H. Pfeiffer

1928

by Arthur Joseph Hoskin, Crandall Zachariah Rosecrans, Harold Eaton Babbitt, Herbert Fisher Moore, Hugh Alexander Brown, Joseph Tykocinski Tykociner, University of Illinois (Urbana-Champaign campus). Engineering Experiment Station, University of Illinois at Urbana-Champaign. Engineering Experiment Station, Charles Alva Keener, George Theodore Felbeck, T.M. Jasper

1925