Vertol CH-21B

Published on in 11 April 1952Full resolution (1800 × 1203)

Piasecki CH-21B Workhorse, 51-15857, at the National Museum of the United States Air Force. (U.S. Air Force)

DAYTON, Ohio — Vertol CH-21B Workhorse at the National Museum of the United States Air Force. (U.S. Air Force photo)

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