by United States. Department of Agriculture

1928

by United States. Bureau of the Census

1910

by United States. Bureau of Mines

1926

by National Council of the Young Men's Christian Associations of the United States of America

1921

by United States. Dept. of Agriculture

1913

by United States. Bureau of the Budget

1927

by United States. Department of Commerce

1919

by United States. Bureau of Foreign and Domestic Commerce

1926

by National Association of State Universities in the United States

1918

by United States. Office of Education

1873

by United States. Office of Education

1874

by United States. Department of the Interior

1895