The Helicopter Engineering Research Corporation (HERC) of Pennsylvania was formed by former Piasecki engineers Drago Jovanovich and Frank Kozloski to build the JOV-3 two-seater. It was the predecessor of the McCulloch MC-4, later turned into the Jovair 4. Early helicopter advertising photographs are fascinating stuff. This one is rather odd, as it looks like the pilot is being flagged down to be breathalyzed! Photo from: Vertical Flight Society
This photo was added on 20 May 2021, and has since been viewed 885 times.
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