1909. Sargent, Rufus Harvey, 1875-1951. Relief shown by contours and spot heights. "Surveyed in 1908." In lower right corner: "Alaska sheet no. 540B." At center of top margin: Topog... U.S. Geological Survey (Washington, D.C.).
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1909. Geological Survey (U.S.) and Minnesota. State Drainage Commission. Cartographic Details: Scales vary. Adolph O. Eberhart, Samuel G. Iverson, Julius A. Schmidt, State Drainage Commission; George A. Ralph, chief engi... U.S. Geological Survey (Washington, D.C.).
1909. Geological Survey (U.S.) and Minnesota. State Drainage Commission. Cartographic Details: Scales vary. Adolph O. Eberhart, Samuel G. Iverson, Julius A. Schmidt, State Drainage Commission; George A. Ralph, chief engi... U.S. Geological Survey (Washington, D.C.).