Carpenter Glenn Shepard Slayton Mercury Autographs Scott Carpenter, John Glenn, Alan Shepard and Deke Slayton Autographs on the inside page of "We Seven" (352pp., hard cover, dust jacket, first edition) In this book the Mercury 7 recount their experiences through the astronaut selection process, preparation, space flight, and more. The dust jacket has edge faults and slight tears, but the autographs are boldly signed.