Lot 503: Flown limited edition commemorative cover, 9.25 x 4, with a cachet honoring the X-15 rocket pilots, 247/1500, flown over Edwards Air Force Base by Joe Engle, signed in pencil by Engle, Scott Crossfield, Bill Dana, and William 'Pete' Knight. In fine condition.
RR Auction's Fine Autographs and Artifacts Auction 458
Wednesday, 12th August 2015
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