The DT torpedo bomber won Douglas its first military contract, beating the Fokker FT (T.II). This photo is captioned 'Navy plane off USS Wright' and was perhaps taken in December 1927 when the seaplane tender Wright visited Boston. The last DT apparently served until 1928. Photo by: Leslie Jones / Boston Public Library

Although designated Curtiss Scout, the CS was a scout and torpedo bomber designed by the US Navy's Bureau of Aeronautics. CS became SC in the Navy's post-1923 designation system. Only eight CS-1 and CS-2 aircraft, including A-6504, were built by Curtiss. 75 more SC-1s and SC-2s were built by Martin, and the design evolved into the Martin T3M. By mid-1927, the SC was only still in use with a training unit at NAS Pensacola. Photo by: Leslie Jones / Boston Public Library