by United States. Division of Forest Economics, Alf Z. Nelson

1941

by United States. Congress. Senate. Committee on Appropriations

1929

by United States. Department of Agriculture

1899

by United States. Department of Agriculture

1887

by United States

1912

by United States. Dept. of Agriculture

1920

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

1929

by United States. Agricultural Research Service

1911

by United States. Bureau of Entomology

1896

by United States. Department of the Interior

1900

by United States. Bureau of Entomology

1890

by United States. Office of Education. Division of educational extension

1919