(Plank Road ticket office, 19', 1850, IL-29-02) SE of Lewistown, Fulton County, IL. E Av. L E. 0.6 miles from jct with US24 in Lewistown, (continue) S. (curves E.) on CR9 3.7 miles, N. on Dickson Mounds Rd. 0.35 miles, W. 150’ into the Dickson Mounds Museum parking lot to the building. (N40 21.095 W90 06.923) Photo 5-23-02.