This photograph shows the partially excavated approach to the lower lock. (Courtesy, University of North Alabama, Collier Library Archives and Special Collections.)

In this photograph two men stand near the newly constructed lock gates. (Courtesy, University of North Alabama, Collier Library Archives and Special Collections.)

The first two vessels to use the lock were the steamer U.S.S. McPherson and dredge Kwasind, both pictured here. (Courtesy, University of North Alabama, Collier Library Archives and Special Collections.)

The electrical pump shown in this photograph powered the lock gate mechanism. (Courtesy, University of North Alabama, Collier Library Archives and Special Collections.)