Washington, D.C.: U.S. Dept. of Agriculture, 1915.

[Chicago?]: The American Field, 1883.

Washington, Govt. Print. Off., 1906.

Washington, D.C.: U.S. Dept. of Agriculture, 1915.

Washington, D.C. :U.S. Dept, of Agriculture, Biological Survey,1913. | U.S. Department of Agriculture, National Agricultural Lib

Washington, D.C.: U.S. Dept. of Agriculture, 1914.

Washington: U.S. Dept. of Agriculture, Biological Survey, 1910.

Washington, Govt. Print. Off., 1912.

Washington, D.C.: U.S. Dept of Agriculture, Division of Biological Survey, 1904.

Washington, D.C.: U.S. Dept. of Agriculture, 1915.

Washington, D. C. :National Geographic Society,1918. | Multiple inst

Washington, D.C.,National Geographic Society,1921. | Multiple instit