This spacesuit was worn by Apollo 11 astronaut Neil A. Armstrong.
Image: Smithsonian’s National Air and Space Museum/Smithsonian Institution.

On this date in 1965, NASA announced that Apollo space suits would be built by the International Latex Corporation, and that the suits’ ‘backpack-style’ life support systems (PLSS) would be developed and built by the Hamilton Standard Division of United Aircraft Corporation. An article about the evolution of spacesuits, from Apollo to future Mars missions, is available at Space.com’s page here.