July 27, 2007

On October 1, 1968, this stamp was issued in Little Rock (Pulaski County) commemorating the opening of the first part of the 445-mile river navigation system today known as the McClellan-Kerr Arkansas River Navigation System. Costing approximately $1.3 billion, the entire system, which connects Tulsa, Oklahoma, to the Mississippi River by way of the Arkansas River, officially opened in 1970. A total of eighteen locks and dams make the passage possible.