Teacher from New Hampshire slated to be the first civilian in space who died tragically in the Challenger explosion on January 28, 1986. TLS, written less than four months before the Challenger's ill-fated mission, signed 'S. Christa McAuliffe,' one page, 8.5 x 11, NASA letterhead, September 18, 1985. A response to a note from an admirer. In full: 'Thank you for your note. I do not have my official photograph yet, but I have placed your name on a list and you should receive one this fall. I'm excited about my upcoming shuttle flight and appreciate your interest.' In very fine condition. COA John Reznikoff/PSA/DNA and RRAuction COA.