by Iowa State University. Department of Forestry

1926

by University of Nevada

1929

by Utah State University. Cooperative Extension Service

1916

by University of Missouri. Agricultural Extension Service

1915

by Kansas. State University, Manhattan. Division of College Extension

1916

by Oregon State University

1921

by University of Nevada

1922

by Ohio State University

1926

by Ohio State University. Alumni Association

1920

by University of Wisconsin. College of Agriculture. Agricultural Extension Service

1909

by Rutgers University. Extension Service in Agriculture and Home Economics

1925

by University of Wyoming. Agricultural Extension Service

1920