Desirable collection of vintage ink signatures of six of the Mercury 7 astronauts on 5.5 x 3.5 postcards, postmarked between 1959 and 1962, including: Gus Grissom ("Virgil I. Grissom, Mercury Astronaut"), John Glenn ("Best wishes to Rev. S. F. Floyd, from John H. Glenn, Jr., Mercury Astronaut"), Scott Carpenter ("Best wishes, M. Scott Carpenter, Mercury Astronaut"), Wally Schirra ("W. M. Schirra, Jr."), Gordon Cooper ("Gordon Cooper"), and Deke Slayton ("Donald K. Slayton, Mercury Astronaut"). In overall very good to fine condition, with postal cancellations and some random attachments.
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