NASA’s Project Mercury Astronauts

The original Mercury astronauts at the McDonnell Aircraft Corp. in May 1959. The astronauts are left to right: M. Scott Carpenter, L. Gordon Cooper Jr., John H. Glenn Jr., Virgil I. “Gus” Grissom, Walter M. “Wally” Schirra, Alan B. Shepard Jr., and Donald K. “Deke” Slayton.