by University of Nebraska (Lincoln campus). Agricultural Experiment Station

1906

by University of Nebraska (Lincoln campus). Agricultural Experiment Station

1924

by University of Wisconsin. College of Agricultural and Life Sciences. Research Division

1910

by University of Nebraska--Lincoln. College of Agriculture

1900

by California. University, University of California, Berkeley

1913

by University of California (1868-1952)

1912

by University of California, Berkeley

1917

by University of Tennessee (Knoxville campus)

1910

by Cornell University

1911

by University of California (System)

1965

by University of Nebraska (Lincoln campus). Libraries

1918

by University of Nevada

1928