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:
NN trainers awaiting engines and other parts at Naval Aircraft Factory Philadelphia Pennsylvania. NARA . Scope and content General notes Local identifier AF Department of the Navy Bureau of Aeronautics Naval Aircraft Factory Philadelphia Pennsylvania ca Still Picture Records Section Special Media Archives Services Division