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 Luftschiff. Internationale Luft und Raumfahrtausstellung Frankfurt This international airship event lasted days and was the world's largest of this kind ever In the background railway Zeitschrift Deutscher Hausschatz Heft ca August Author PDold aircraft in aviation Historical trains ILA Nonrigid