by United States. Climatological Service. Nevada Section

1901

by United States. Bureau of Reclamation

1921

by United States. Dept. of the Interior

1930

by United States. Department of the Treasury

1875

by United States. Department of the Interior

1883

by United States. Office of Education

1872

by National Education Association of the United States

1907

by United States. Dept. of Agriculture

1914

by Estados Unidos, United States

1918

by United States

1917

by United States. Superintendent of Documents

1929

by United States. Bureau of Agricultural Economics. Library

1926