A Rare Bird

N19903 "Clipper Flying Cloud" one of only three Boeing 307 ever to fly for Pan American Airways.  Only ten of these aircraft were ever made. It had the promise of high altitude and a pressurized cabin, but it did not have the long haul range (transatlantic) that Mr Juan Trippe had planned for. She was sold.

See her story, where she wound up, and eventually touched down: 
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Boeing 307