This image was acquired from
flickr. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
william munger williammunger gee bee geebee granville brothers granvillebrothers xpbs xpbs sikorsky illustration buno buno aviation aircraft airplane seaplane flying boat flyingboat sikorsky xpbs sikorskyxpbs prototype military aviation militaryaviation naval aviation navalaviation cn united states navy unitedstatesnavy us navy