We have a map library which has topo maps galore. Try your nearest geology or geography department at a local college or university or perhaps a high school geography or science teacher could help you. If you would like to send me a large self-addressed stamped envelope, I would be happy to locate two or three older maps for you. Connie Fairchild Dept. of Geology Western Illinois University Macomb, IL 61455 Internet: [log in to unmask]