Pennsylvania Military Museum - MC-4 High Altitude Pressure Suit, c. 1958 "Developed and produced around 1958, this MC-4 flight suit is one of a lightweight generation of high altitude partial-pressure suits intended
Ultra-high altitude early U-2 pressure suit with helmet and facemask | Lot #1021 | Heritage Auctions
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Rent a Space Suit and Astronaut Pilot Helmet High Altitude Flight Kit, Best Prices | ShareGrid Los Angeles, CA
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Original U.S. Cold War 1955 Air Force Model MC-1 High Altitude Flight – International Military Antiques
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