After the Great War, Air Service Brig. Gen. William "Billy" Mitchell requested the Engineering Division at McCook Field design an aerial dispatch vehicle able to serve as a liaison between battlefield units. Civilian Alfred V. Verville completed the design in early 1920 and the Lawrence Sperry Aircraft Company received the manufacturing contract. Sperry produced approximately 50 Messengers and the civilian two-seat version, the Sport Plane, between 1920 and 1926.The Messenger's small size, simple construction, and inexpensive cost made it ideal for testing and experimentation. The National Advisory Committee for Aeronautics used one in its pioneering aerodynamic research programs from 1923 to 1929. Sperry modified twelve into the radio-controlled Messenger Aerial Torpedo and developed the apparatus for a Messenger to make the first successful airship hook on and release in December 1924. This is the last remaining Messenger. It was originally a Sport Plane and was converted to represent the Messenger used in the army's 1924 airship tests.