(W 89⁰45ʹ00ʺ--W 88⁰00ʹ00ʺ/N 37⁰52ʹ30ʺ-- N 37⁰00ʹ00ʺ).
Relief shown by contours and spot heights.
"Modification to USGS base map by Geometronics Service Center from 1981 and 1982 aerial photography and 1982 correction guides furnished by the Eastern Region."