1926. Geological Survey (U.S.). Relief shown by contours and spot heights.; "Printed 1926"--lower right border.; "From U.S. Geological Survey topographic maps surveyed in 1884-189... The Survey (Washington, D.C.?).
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1917. Geological Survey (U.S.). Relief shown by contours and spot heights.; Includes notes. 117 x 106 centimeters Scale 1:31,680 General Map Collection. Department of the Interior, U.S. Geological Survey (Washington).
1898. Geological Survey (U.S.). Relief shown by contours. Contour interval 20 ft.; "Surveyed in 1885-86 and 95-97."; Text, "Description of the topographic map of the United States... U.S. Geological Survey (Washington?).