by National University Extension Association

1926

by University of California Agricultural Extension Service

1930

by University of Hawaii (Honolulu). Agricultural Extension Service

1917

by Rutgers University. Extension Service in Agriculture and Home Economics

1915

by University of Connecticut. College of Agriculture. Extension Service

1916

by Colorado State University. Extension Service

1926

by University of Connecticut. Cooperative Extension Service

1915

by Benjamin William Frazier, John Lund, Kent State University, Mary Dabney Davis, Mary Evalyn Crookston, Max Lederer, Nora Ernestine Beust, United States. Office of Education

1941

by Idaho. University. School of Business Administration

1922

by New Mexico State University. Agricultural Experiment Station

1922

by New Mexico State University. Agricultural Experiment Station

1924

by University of California, Berkeley

1961