Lee Oswald, the assassin of President Kennedy, traveled to Mexico City at the end of September, 1963. During his stay there, he visited both the Cuban and Soviet Union embassies. Prior to one of these visits, he called the Soviet Embassy, identifying himself as Lee Oswald. This call was monitored by a teltap center, jointly operated by the Mexican and United States governments, and became the subject of several cables between CIA headquarters and its Mexico City station in October 1963, a month before the assassination of President Kennedy.…