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"P.S. Duval & Son, lith. Philada."
Relief shown by hachures. Depths shown by soundings in feet.
Relief shown by hachures. Depths shown by soundings.
Depths shown by soundings and isolines.
Relief shown by hachures. Depths shown by soundings and isolines.
Relief shown by contours.
Compiled from the maps of the Kentucky and U.S. Geological Surveys and the various railroad, river and county surveys.