Geological Survey (U.S.)Relief shown by contours, hachures and spot heights. Depths shown by soundings and isolines.; "The base is a copy of a portion of chart T of the U.S. Coast and Geodetic Survey"--Base map.; Probably from: Maps and descriptions of routes of exploration in Alaska in 1898. Washington, D.C. :U.S. Geological Survey, 1899.; Base map overprinted in red.; To accompany: "Report. Public resolution no. 25, 55th Congress, 3d session"--Upper right margin.; [Sheet 1] [Base map, 1:3,600,000] -- [Sheet 2] Explorations in Alaska, Sushitna River and adjacent territory [1:625,000] -- [Sheet 3] Headwaters of Skwentna and Kuskokwim Rivers and vicinity of Katmai [1:625,000] -- [Sheet 4] Middle Kuskokwim River, and part of Bristol Bay [1:625,000] -- [Sheet 5] Lower Kuskokwim River, Kanektok River, and Togiak Bay [1:625,000] -- [Sheet 6] Alaska, route of military expedition ... from Knik Arm to Tanana River [1:625,000] -- [Sheet 7] Alaska, military expedition. Copper River and adjacent territory [1:376,000] -- [Sheet 8] Prince William Sound and vicinity [1:376,000] -- [Sheet 9] Explorations in Alaska ..., portions of Tanana and White Rivers [1:625,000].109 x 111 centimeters or smallerJPEGUMN_ALMA:9927565810001701engThe Survey (Washington, D.C)PublicMap of Alaska : showing explorations by U.S. Geological Survey in 1898, together with principal previous routes of explorationMapsAlaska1899University of Minnesota