Ministry of Communications (Soviet Union)
The Ministry of Communications of the Union of Soviet Socialist Republics (USSR) (Russian: Министерство связи СССР) was the central state administration body on communications in the Soviet Union from 1923 to 1991. During its existence it had three names: People's Commissariat for Posts and Telegraphs (1923–32), People's Commissariat for Communications (1932–46) and Ministry of Communications (1946–1991).
Source: Wikipedia — Ministry of Communications (Soviet Union) (CC BY-SA 4.0)