by University of Illinois (Urbana-Champaign campus)

1929

by University of Illinois (Urbana-Champaign campus). Board of Trustees

1872

by University of Illinois (Urbana-Champaign campus) Board of Trustees

1870

by Antonio Guell, Arthur Newell Talbot, Claude Mallory Garland, John Myron Bryant, Morgan Brooks, Trygve Dewey Yensen, University of Illinois (Urbana-Champaign campus). Engineering Experiment Station, University of Illinois at Urbana-Champaign. Engineering Experiment Station, Alonzo Plumsted Kratz, Arthur Russell Lord, Harry Gray Hake, Herbert Fisher Moore, Hubert Michael Turner

1912

by D. C. Hallbick, E. G. Holhubner, University of Illinois (Urbana-Champaign campus). Agricultural Experiment Station, John D. Alexander, John E. Paschke

1970

by C. E. Downey, G. W. Hudelson, John D. Alexander, University of Illinois (Urbana-Champaign campus). Agricultural Experiment Station, Walter D. Parks

1972

by Arthur Newell Talbot, John Kay Clement, John McBeath Snodgrass, Samuel Wilson Parr, Thomas Hamer Amrine, University of Illinois (Urbana-Champaign campus). Engineering Experiment Station, University of Illinois at Urbana-Champaign. Engineering Experiment Station, Antonio Guell, Duff Andrew Abrams, Perry Barker

1909

by Arthur Newell Talbot, Calude Silbert Hudson, George Alfred Goodenough, Ira Osborn Baker, Samuel Wilson Parr, Thomas Hamer Amrine, University of Illinois (Urbana-Champaign campus). Engineering Experiment Station, University of Illinois at Urbana-Champaign. Engineering Experiment Station, William Freeman Myrick Goss, Charles Kenworthy Francis, Claude Mallory Garland

1908

by University of Illinois (Urbana-Champaign campus). Engineering Experiment Station

1917

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 Arthur Cutts Willard, Edward Wight Washburn, Fred B. Seely, Harry Harkness Stoek, Herbert Fisher Moore, Rexford Newcomb, Tokujiro Yoshida, Torata Matsumoto, Alonzo Plumsted Kratz, Jesse Benjamin Kommers, University of Illinois at Urbana-Champaign. Engineering Experiment Station, William James Putnam, University of Illinois (Urbana-Champaign campus). Engineering Experiment Station, Vincent Stephen Day

1921

by University of Illinois, University of Illinois (Urbana-Champaign campus)

1928