1917. Geological Survey (U.S.). Surveyed in 1913-1915.; Relief shown by contours and spot heights. 124 x 112 centimeters Scale 1:31,680 General Map Collection. The Survey (Washington).
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1917. Geological Survey (U.S.). Surveyed in 1913-1915.; Relief shown by contours and spot heights. 124 x 112 centimeters Scale 1:31,680 General Map Collection. The Survey (Washington).