In St. Louis County, the Museum of Transportation is featuring a Civil War sesquicentennial exhibit titled "Roads, Rivers, & Rails: Transportation of the Civil War." This episode takes a look at that exhibit, but more importantly, at a strategic tunnel on Museum of Transportation property. It was virtually the only way to get into the city of St. Louis 150 years ago if you were traveling by rail. Also in this piece, we meet a man who is trying to construct, and build support for, a Civil War tourism travel map in the state of Missouri similar to those in Virginia and Tennessee, two states which have had success with drawing attention to their Civil War heritage.