Martin-built Boeing B-29 Superfortresses

Designed by Boeing, the big B-29 bomber was built by three companies at four locations, including Martin at Omaha (after the Air Corps decided to phase out the B-26). The Martin-built "Enola Gay" and "Bockscar," which dropped the two atomic bombs, were preserved after the war. The former belongs to the Smithsonian Institution and can be seen at NASM's Steven F. Udvar-Hazy Center at Dulles International Airport; the latter is at the Air Force Museum.