Lot 492: Collection of five commemorative covers honoring the X-15 program and its pilots, ranging in size from 6.5 x 3.75 to 9.25 x 4, each signed in ink or pencil by different pilots, including: Robert Rushworth; Bill Dana; Milt Thompson and Air Force General Irving Branch; Joe Engle; and William Pete Knight, Bill Dana, and Joe Engle (all three in pencil). In overall fine condition, with slight haloing to an Engle signature, and light toning from a removed address label. From the Leon Ford Collection.
RR Auction's Fine Autographs and Artifacts Auction 456
Wednesday, 15th July 2015
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