NASA. Gemini 4 mission. First historic spacewalk by an American on June 3, 1965. The astronaut Edward H. White floats in the space vacuum connected to the spacecraft Gemini 4 by a 7 meters umbilical crodon. His exit lasted 21 minutes. It is one of the greatest moments of the beginning of the human space conquest. Silver print of the time. Numbering NASA and mention NASA in the margin on the front. NASA logo and typed caption on the back. 20,6 x 25,6CM with margins.