Here's a cool map of the course of the Mississippi River over the past 10,000 years as it has flowed from Cape Girardeau to Donaldsonville, Louisiana.
Howard N. Fisk, a U.S. Army Corp of Engineers consultant, rendered the illustration above back in 1944. You can view (and download) more of his maps of the river at the landscape architecture site, Pruned
. Hat tip to BoingBoing.com.