Note: This engine is located in the Research & Development Gallery on a controlled-access portion of Wright-Patterson Air Force Base. Click here for requirements to visit this gallery.
The six-cylinder water-cooled Liberty, which developed 200-215 hp, was built during World War I by Thomas-Morse Aircraft Corp. and Wright Aeronautical Corp. Since the L-6 was too large for mail airplanes and other types of engines were available for other types of aircraft, requirements for the L-6 were canceled after 52 had been built. In 1921 the L-6 was installed in the Curtiss (only two built) and the Engineering Division TW-1 (only six built).