Mercury Spacecraft, designed and built by McDonnell, St. Louis for NASA. Signed by the six astronauts who flew in the Mercury program: Alan B Shepard, Gus Grissom, J H Glenn, Jr., Scott Carpenter, Wally Schirra and Gordon Cooper.
Gordon Cooper - Toward the end of his Faith 7 space flight there were mission-threatening technical problem when his capsule had a power failure. Carbon dioxide levels began rising, and the cabin temperature jumped to over 100 degrees Fahrenheit (38°C). Cooper fell back on his understanding of star patterns, took manual control of the tiny capsule and successfully estimated the correct pitch for re-entry into the atmosphere.