(35', 1860, IL-75-02) in Griggsville, Pike County, IL. Corey St. S. 0.3 miles (4 blocks) from jct with IL107 in the center of Griggsville to the house on the E. side of the road at 412 S. Corey St. at the NE corner of Corey & Washington Sts. (12-27-2001, N39° 42.235', W90° 43.576')