(W 86⁰52ʹ30ʺ--W 86⁰00ʹ00ʺ/N 39⁰07ʹ30ʺ--N 37⁰52ʹ30ʺ)
Relief shown by contours and spot heights.
"Modification to USGS base map by the Geometronics Service Center from 1978 aerial photography and 1980 correction guides furnished by the Eastern Region."