Original felt tip sketch of a lunar orbit rendezvous diagram by aerospace engineer John C. Houbolt on a white 10 x 8 card, signed in black felt tip, “We followed his plan to the moon. Charlie Duke, Apollo 16,” “Alan Bean, Apollo 12,” and “Edgar Mitchell, Apollo 14.” In fine condition. A decidedly unusual format signed by three moonwalkers. Pre-certified Zarelli Space Authentication.
This item is Pre-Certified by STEVE ZARELLI
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