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Keywords from Image Description:
william bill wheatley collection photo lt harry generous with dehavilland dh williambillwheatleycollectionphotoltharrygenerouswithdehavillanddh th observation sqd. thobservationsqd c. dh. dh dhb dhb aviation aircraft airplane biplane de havilland dehavilland de havilland dh dehavillanddh de havilland dhb dehavillanddhb harry w.