Shows soil types classification by colors and symbols. "Field Operations, Bureau of Soils, 1915." "Snyder & Black, N.Y.
Imprint: [Washington, D.C?] : The Bureau of Soils, 1915.
Scale: 1:63,360; Dimensions: 62 x 69 cm
Coordinates: W0861900 W0855100 N0384700 N0382500