I haven't found any non-copyrighted photos of the O-51,
but here's two photolinks on the Aerofiles website:
Debutting in 1940, Ryan's Dragonfly was an observation/liason aircraft that (thanks to the full-span flaps on its parasol wing) could perform in the STOL (Short TakeOff and Landing) role. Except for its very cylinderical fuselage, the Dragonfly somewhat resembled the German Storch. The US Army gave it the designation O-51, but with only three examples being built, it never proceeded beyond the YO-51 designation.
Ryan YO-51 Dragonfly
Type: observation aircraft Crew: 2: Pilot, observer Armament: N/A Specifications: Length: N/A Height: N/A Wingspan: 52' 0" Wing area: N/A Empty Weight: 4206 lb Max Weight: N/A Propulsion: No. of Engines: 1 Powerplant: Pratt & Whitney R-985-21 radial Horsepower: 440 hp Performance: Range: N/A Cruise Speed: N/A Max Speed: N/A Ceiling: N/A
(go to manufacturer's page)
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