(IL-41-02) in Mt. Vernon, Jefferson County, IL. IL15 (Broadway St.) E. 1 block from IL37 (10th St.), S. on 9th St. 200’ to the sign on the E. side of the road at 222. (N38 18.982 W88 54.139) Photo by Mark Comstock, Larry Baker, & Dick & Betty Hoover 10-24-08.