United States, Illinois, Clinton, About 3 mile east and 0.5 mile north of New Memphis, Illinois. Botton land pin oak woods near Post Oak Slough. Effingham Plain Section of the Southern Till Plain Natural Division. Coordinate Datum: WGS84/NAD83.
T. 1N, R. 5W, NE1/4 SW1/4 NE1/4 Sect. 35; 38.49158, -89.61668
Bottom land woods with lots of pin-oak near Post Oak Slough.