Keywords: us navy usnavy radioman canal zone canalzone aviation aircraft airplane biplane seaplane flying boat flyingboat prototype naval aviation navalaviation united states navy unitedstatesnavy usn buno a-6881 bunoa6881 a-6881 a6881 boeing boeing xpb boeingxpb xpb boeing xpb-1 boeingxpb1 xpb-1 xpb1 boeing model 50 boeingmodel50 boeing 50 boeing50 packard motors packardmotors packard packard 2a-2500 packard2a2500 2a-2500 2a2500 boeing pb boeingpb boeing pb-1 boeingpb1 pb-1 pb1 blackandwhite monochrome outdoor photo border black and white From a photo album belonging to C.W. Allen. Repository: San Diego Air and Space Museum Archive From a photo album belonging to C.W. Allen. Repository: San Diego Air and Space Museum Archive |