Shows soil types classification by colors and symbols. "Field Operations, Bureau of Soils, 1902." "Julius Bien & Co., Lith. N.Y." Imprint: [Washington, D.C.?] : The Bureau, [1902] Dimensions: 80 x 52 cm; Scale: 1:63,360 Coordinates: W0880600 W0874100 N0381400 N0374600