The US Army ordered a new variant of the US Navy's CR racer and used it to beat the Navy aircraft in the 1922 Pulitzer Trophy race. Other photos show that the winning race number 43, flown by Lt Maughan, was serial number 68564; thus number 44, flown by Lt Maitland, was 68563. Flying 68564, Gen Billy Mitchell himself set a new absolute world speed record of 358.84 km/h (222.973 mph) three days later on 18 October. Photo from: Smithsonian Institution

A Curtiss CR racer built for the US Navy had won the 1921 Pulitzer Trophy race, although flown for Curtiss by Bert Acosta. Sources disagree whether this was the CR-1, A-6080, or the modified CR-2, A-6081. With the CR-1 upgraded to CR-2 standard, the Navy flew both in the 1922 edition at Selfridge Field, but was beaten by the US Army's variant of the CR, the Curtiss R-6. The CRs were then changed to CR-3 floatplanes to win the 1923 Schneider Trophy. A-6081 also set a speed record for seaplanes and was modified to CR-4 testbed and trainer for the 1926 Schneider races. Photo from: Smithsonian Institution

Racer built by the Aerial Engineering Corporation, Hammondsport, New York. This company was later known as Mercury Aircraft. A-6429 was the BR-1. Photo from: Naval History and Heritage Command