American Aviation Historical Society

 
Earl Ortman, the perennial second-place finisher did it again in this updated 
Keith Rider R-3, now called the "Marcoux-Bromberg Special." The improvements 
for 1937 included a new cockpit enclosure, a new P&W twin-row 
Wasp Jr. engine in place of its former P&W Wasp Sr., a NACA cowl with 
cowl flaps and a new three-bladed propeller. 
(Photo by Emil Strasser courtesy of Gerald Liang)

 

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