U.S. Geological Survey ; contours by Frank Leverett. Relief shown by contours. Contour interval 100 feet. "Base from U.S. Geological Survey 1:1,000,000 scale map of the United States now in preparation." "The 100-foot contours are based on topographic maps of certain quadrangles by the U.S. Geological Survey, on Ashley's map of part of southern Indiana (Plate I, 27th Report, Indiana Geological Survey), and on railroad altitudes supplemented by aneroid readings." Map has date "1914" below title block. In upper right margin: Monograph LIII Plate III.
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