- President (1961-1963 : Kennedy). Office of the Personal Secretary. 1961-1963
- John F. Kennedy Library
This is a Department of State translation of a telegram from Nikita Khrushchev to President Kennedy thanking him for his congratulations on the successful flight of Yuri Gagarin, and expressing hope the U.S. and USSR may work together in mastering the universe. April 30, 1961.
- Soviet Union