by USA.

1898

by USA Division of Chemistry

1893

by USA. Congress

1899

by USA. Department of Agriculture

1885

by USA Congress House of Representatives

1897

by USA Office of Experiment Stations

1896

by USA Department of Agriculture

1898

by USA Department of Agriculture

1898

by USA. Congress. Senate

1898

by USA. Department of Agriculture

1897

by USA. Division of Entomology

1897

by USA. Department of Agriculture

1884