Rare, complete set of 100 Smithsonian ‘Milestones of Flight’ commemorative covers, in two original 8 x 11.25 Smithsonian binders. Scarce and flown covers include: #1, honoring Yeager’s supersonic flight, flown at supersonic speed over Edwards Air Force Base on the 25th anniversary of his flight; #7, honoring the US Aerobatics Team, flown aerobatically with Charlie Hillard, world men’s aerobatic champion; #14, honoring the first around-the-world flight, flown around the world by Pan Am on the 50th anniversary of the flight; #15, honoring Apollo 10, with postal cancellation on the reverse from the five year anniversary of the Apollo 10’s complete orbit of the moon; #21, honoring the 45th anniversary of Byrd’s flight over the South Pole, flown over the same course taken by Byrd and the US Navy Antarctic Development Squadron 6; and #24, honoring the first micrometeoroid detection satellite, which includes a signed letter from the program manager about a cancellation error. Most covers have a typed address or address label affixed to the lower right. In fine condition, with light bends and toning to some of the covers. Sets in the original binders that include the #1 Yeager cover are rare and especially desirable. RR Auction COA.
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