by United States. Bureau of Animal Industry

1886

by United States. Bureau of Animal Industry

1886

by United States. Bureau of Animal Industry

1912

by United States. Bureau of Animal Industry

by United States. Bureau of Animal Industry

1942

by United States Animal Health Association

1920

by United States. Bureau of Animal Industry. Animal Husbandry Division

1925

by United States Livestock Sanitary Association

1921

by United States. Bureau of Animal Industry

1913

by United States. Congress. Senate

1916

by United States. Department of Agriculture

1918