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:
Usnairships. Navy blimps at the Naval Air Station in Lakehurst New Jersey USA during what appears to be demonstration in Among the craft present are kite balloon upper craft at left five free balloons the USS Los Angeles ZR in the middle distance blimp and and another Jclass blimp in the center and metalclad airship ZMC at right