Real photo postcard, postmarked May 22, 1951
In the late 1920s, Ozark Utilities Company of Bolivar built a low hydroelectric dam at Osceola. While it did block spawning runs of fish (except during very high water), the reservoir it created, called lake Sac-Osage, flooded very little farmland. Its environmental impact was minimal compared to the high dams that would be built later by the Army Corps of Engineers. The Osceola dam was removed before Truman Reservoir filled.