You're thinking of Appollo-Soyuz, which happened in the 70's. the first space docking was in the Gemini program, Gemini 8, which docked to an american Agena up

You're thinking of Appollo-Soyuz, which happened in the 70's. the first space docking was in the Gemini program, Gemini 8, which docked to an american Agena upperstage.