Geological Survey (U.S.)Relief shown by contours and spot heights.; Shows status of roads.; On verso: "The topographic maps of the United States" (text and ill.).53 x 60 centimetersJPEGUMN_ALMA:9954262990001701engThe Survey (Washington)PublicTopographic map, Lassen Volcanic National Park, CaliforniaMapsCalifornia--Lsssen Volcanic National ParkCalifornia1929University of Minnesota