Contour interval 10 feet.;"Culture and drainage in part compiled from aerial photographs taken 1939. Topography by plane-table surveys 1951."; (W 89⁰00’00"--W 88⁰45’00"/N 41⁰45’00"--N 41⁰30’00");Relief shown by contours and spot heights.;1 map, colored;45 x 34 cm.;1:62,500