Apollo 11 Plaque.
The astronauts removed a sheet of stainless steel to unveil the plaque affixed to the lunar module leg under the descent ladder and read to the television audience: "Here men from the planet Earth first set foot upon the Moon, July 1969 A.D. We came in peace for all mankind." It was signed by Armstrong, Collins, Aldrin, and President Richard Nixon.
(NASA photo ID AS11-40-5899)
