This artist's concept illustrates the Apollo-type spacecraft about to dock with a Soviet Soyuz-type spacecraft (right).
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President Richard Nixon and Soviet Premier Alexei Kosygin sign an agreement in May of 1972 that paved the way for the Apollo–Soyuz mission.
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The U.S.-USSR crew for the 1975 Apollo Soyuz Test Project mission: astronaut Tom Stafford (standing on left), commander of the American crew; cosmonaut Alexei Leonov (standing on right), commander of the Soviet crew; astronaut Donald Slayton (seated on left), docking module pilot of the American crew; astronaut Vance Brand (seated in center), command module pilot of the American crew; and cosmonaut Valeriy Kubasov (seated on right), engineer on the Soviet crew.
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The Soviet Soyuz launch vehicle leaves from the Baikonur Cosmodrome in Kazakhstan.
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The Saturn IB launch vehicle lifts the American crew into orbit on July 15, 1975.
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Activity inside Mission Control in Houston during the Apollo Soyuz Test Project docking mission.
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American astronauts Tom Stafford and Deke Slayton hold tubes of vodka given to them by Russian cosmonauts during their historic rendezvous and linkup of Apollo and Soyuz spacecraft.
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The American Apollo spacecraft as seen in Earth orbit from the Soviet Soyuz 19 spacecraft during the joint U.S.-USSR Apollo Soyuz Test Project (ASTP) mission.
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The Soviet Soyuz spacecraft approaches the Apollo for linkup in space, the first rendezvous and docking of vessels from different nations.
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Astronaut Tom Stafford (in foreground) and cosmonaut Alexei Leonov make their historic handshake in space on July 17, 1975.
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President Gerald R. Ford watches crewmen Tom Stafford, Donald Slayton and Valeriy Kubasov on a television as he talks to them by phone while they orbited the Earth on July 18, 1975. The American Apollo spacecraft and Soviet Soyuz spacecraft were docked.
The White House
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American astronaut Deke Slayton and Russian cosmonaut Alexei Leonov during the US-Soviet Apollo-Soyuz linkup.
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