Capt. Floyd Baker (center), first-year surgical resident, using the pump-oxygenator to close an atrial septal defect during a surgery at Fitzsimons Army Hospital, Colo., in 1956. ( Army photo courtesy of retired Maj. Gen. Floyd Baker/Released)

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Size: 1853px × 1499px
Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
Model Released: No

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