US 1971 8c Decade of Space Achievement Stamps

Robert McCall's attached pair marks the first decade of American spaceflight and was issued on August 2, 1971, the day the Apollo 15 crew left the Moon. The left stamp shows a landing craft on the lunar surface under a blazing sun with Earth beyond; the right shows two astronauts aboard the Lunar Roving Vehicle, which carried that crew about 17 miles across the surface. Set beside the 1969 airmail, it shows how quickly exploration moved from first footsteps to driving across the Moon.