United States. Warren Commission, Report of the President's Commission on the Assassination of President John F. Kennedy
“ From the time of his release from the Marine Corps until the assassination, Lee Harvey Oswald dealt in various transactions with several agencies of the U.S. Government. Before departing the United States for the Soviet Union in 1959, he obtained an American passport, which he returned to the Embassy in Moscow in October 1959 when he attempted to renounce his U.S. citizenship. Thereafter, while in the Soviet Union, Oswald had numerous contacts with the American Embassy, both in person and through correspondence. ”
