Collection of 25 commemorative covers, many with stamped cachets honoring various achievements of NASA's space programs, each signed in ink by an astronaut. Signers include: Vance Brand, Bob Cabana, Gordon Cooper, Walt Cunningham, Gordon Fullerton, John Glenn, Brent Jett, Tony England, Joe Engle, Ron Evans, Dick Covey, Wubbo Ockels, Hank Hartsfield, Terry Hart, Helen Sharman, Ulf Merbold, Jean-Loup Chretien, Lee Morin, Carl Walz, Rhea Seddon, Bob Crippen, Sidney Gutierrez, Nicole Stott, and Donald Thomas. In overall fine condition. A great group of autographs, representing astronauts from the entire history of NASA—including participants in the Mercury, Gemini, Apollo, and Space Shuttle programs.