by United States. Department of Agriculture

1895

by United States. Department of Agriculture

1907

by United States. Congress. Senate. Committee on Finance

1929

by Chamber of Commerce of the United States of America

1915

by United States. Congress. House. Committee on Ways and Means

1929

by United States. Children's Bureau

1929

by United States. Congress. Senate. Committee on Appropriations

1930

by United States. Congress. Senate. Committee on Appropriations

1928

by National Confectioners' Association of the United States

1920

by United States. Congress

1903

by United States. Office of Experiment Stations

1902

by United States. Bureau of Agricultural Economics

1923