by University of Michigan

1939

by University of Michigan

1963

by University of Michigan. Extension Service. Bureau of broadcasting

1929

by University of Michigan

1930

by Ohio State University. Cooperative Extension Service

1921

by University of Michigan

1927

by University of Michigan. Office of the Registrar

1928

by Michigan. State University of Agriculture and Applied Science (East Lansing). Extension Service

1925

by University of Michigan

1927

by University of Michigan

1927

by University of Michigan. School of Education

1929

by National University Extension Association

1923