by United States. Department of Agriculture. Bureau of Statistics

1904

by United States. Department of Agriculture

1899

by United States. Office of Experiment Stations

1903

by United States. Dept. of Agriculture. Bureau of Statistics

1906

by United States. Department of Agriculture. Pomologist

1892

by UNITED STATES DEPARTMENT OF AGRICULTURE

1903

by United States. Office of Experiment Stations

1899

by United States. Bureau of Plant Industry

1908

by United States. Bureau of Plant Industry

1909

by United States. Bureau of Plant Industry

1902

by United States. Forest Service

1914

by United States. Bureau of Entomology

1897