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- XB-39 2
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- XB-39 41-36954 side view
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- XB-39 cockpit 2
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- XB-39 41-36954 2
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- XB-39 cockpit side cockpit
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- XB-39 Spirit of Lincoln in flight
XB-39 was a single example of the B-29 converted to fly with alternative powerplants the air-cooled Wright R-3350 radial engines.