Geological Survey (U.S.)Relief shown by contours and spot heights.; "Surveyed in 1924-5."; Vertical scale of profiles 1 in. = 40 ft.; Includes "Key map of plan sheets" on each sheet.; "2 plan sheets, 1 profile sheet."sheets 53 x 74 centimetersJPEGUMN_ALMA:9919350620001701engThe Survey (Washington)PublicPlan and profile of middle fork Eel River, California : to mile 34 ; Black Butte River to mile 4 ; and tributariesMapsCalifornia1926University of Minnesota