by United States. Federal Extension Service

1924

by United States. Federal Extension Service. Division of Cooperative Extension

1919

by United States. Federal Extension Service. Division of Cooperative Extension

1917

by United States. Office of Cooperative Extension Work

1927

by United States. Superintendent of Documents

1978

by United States. Congress. Senate. Committee on Appropriations

1928

by United States. Office of Experiment Stations

1913

by National Education Association of the United States

1913

by National Education Association of the United States

1922

by United States. Department of Agriculture

1915

by United States Livestock Sanitary Association

1922

by National Education Association of the United States

1922