by Illinois State Laboratory of Natural History

1896

by Illinois

1869

by University of Illinois (System). Board of Trustees

1887

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

1890

by University of Illinois (Urbana-Champaign campus)

1914

by University of Illinois (Urbana-Champaign campus)

1904

by Illinois

1891

by University of Illinois (Urbana-Champaign campus)

1920

by Illinois State Museum

1912

by Illinois. Office of the Superintendent of Public Instruction

1915

by University of Illinois (Urbana-Champaign campus)

1920

by Illinois. Office of Secretary of State

1927