American electrical engineer (1918-2015) who was an associate administrator at NASA who headed the Office of Manned Space Flight from September 1963 until December 1969. He was instrumental in introducing the all-up testing philosophy for the Saturn V launch vehicle, which ensured the success of the Apollo program in landing a man on the Moon and returning him safely to Earth by the end of 1969. Mueller also played a key part in the design of Skylab, and championed the Space Shuttle's development, which earned him the nickname, ‘the father of the Space Shuttle.’ FDC with a cachet honoring esteemed rocket scientist Robert H. Goddard, postmarked at Roswell, New Mexico, on October 5, 1964, signed in blue felt tip, "George E. Mueller." In very fine condition.
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