The Soyuz/Vostok, also known as just Soyuz or Vostok, or by its GRAU index, 11A510 was an interim expendable carrier rocket used by the Soviet Union in 1965 and 1966. Two were launched with prototype US-A satellites.
The Soyuz/Vostok was launched from Site 31/6 at the Baikonur Cosmodrome. From Wikipedia
