by University of Illinois (Urbana-Champaign campus)

1912

by University of Illinois (Urbana-Champaign campus)

1928

by University of Illinois (Urbana-Champaign campus). Water Resources Center

1907

by University of Illinois (Urbana-Champaign campus)

1929

by University of Illinois (Urbana-Champaign campus)

1926

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

1928

by University of Illinois at Urbana-Champaign. Graduate College

1904

by University of Illinois (Urbana-Champaign campus)

1927

by University of Illinois (Urbana-Champaign campus)

1924

by University of Illinois (Urbana-Champaign campus). Dept. of Zoology

1916

by University of Illinois at Urbana-Champaign. Graduate school

1913

by University of Illinois (Urbana-Champaign campus)

1916