by Cornell University

1925

by University of Cambridge

1904

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

1906

by University of Illinois (Urbana-Champaign campus)

1906

by University of Minnesota. Agricultural Extension Service

1924

by University of Minnesota. Agricultural Experiment Station

1888

by University of Minnesota. Agricultural Experiment Station

1908

by University of Minnesota

1917

by University of Minnesota. President

1916

by University of Minnesota

1916

by Clemson University. School of Vocational Education

1925

by University of Minnesota

1917