1912. Geological Survey (U.S.). "Reduced from map on scale of 1:5,000,000 compiled by the U.S. Geological Survey."; "1912."; Includes insets of the Aleutian Islands and the Windwa... The Survey (Washington, D.C).
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1912. Geological Survey (U.S.). Relief shown by contours and spot heights.; "R. B. Marshall, Chief Geographer"; "Topography by C.H. Birdseye, Geo. R. Davis ... H.L. McDonald, T.H.... The Survey (Washington, D.C).