18.5 hp chain-driven Harley-Davidson
Photo at 1925 Pulitzer Air Race, Mitchel Field Long Island NY.
Engine replaced in 1929 with 45 hp Anzani. Crashed in 1930 after a low-altitude spin, killing pilot Homer Goodier.
The aircraft to the right is the Mercury CW-1 Junior, but with a different lower wing than the one in a photo at aerofiles.com.