In time almost forgotten, the Midwest and upper South were once home to thousands of Americans who lived and worked on the rivers as sharecroppers, fishermen, mussel shellers, button cutters, traveling minstrels and even moonshiners. Work was their life, and the work was hard. But though they were the backbone of the industry in cities like Muscatine and Cairo, they played too, enjoying the music of Memphis and St. Louis along with their ways. Audiences can join Dennis Stroughmatt on an exciting voyage of discovery using both performance and presentation at 6:30 p.m. Thursday, Sept. 24, at the Hennepin library. The presentation will also be on Facebook.