This image was acquired from
wikimedia. 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:
Luftfahrtausstellung Frankfurt Flugzeug. en Internationale LuftschiffahrtAusstellung Frankfurt nonrigid airship appears in the background This international airship event lasted days and was the world's largest of this kind ever Zeitschrift Deutscher Hausschatz Heft ca August Author PDold VoisinFarman in aviation Historical