Investigation by the Commission has produced no plausible evidence that Lee Harvey Oswald had any other significant contacts with the Communist Party, U.S.A., the Socialist Workers Party, or with any other extreme leftist political organization. The FBI and other Federal security agencies have made a study of their records and files and contacted numerous confidential informants of the agencies and have produced no such evidence.[C6-420] The Commission has questioned persons who, as a group, knew Oswald during virtually every phase of his adult life, and from none of these came any indication that Oswald maintained a surreptitious relationship with any organization. Arnold S. Johnson, of the American Communist Party; James T. Tormey, executive secretary of the Hall-Davis Defense Committee; and Farrell Dobbs, secretary of the Socialist Workers Party, voluntarily appeared before the Commission and testified under oath that Oswald was not a member of these organizations and that a thorough search of their files had disclosed no records relating to Oswald other than those which they produced for the Commission.[C6-421] The material that has been disclosed is in all cases consistent with other data in the possession of the Commission. _Socialist Labor Party._--Oswald also wrote to the Socialist Labor Party in New York in November 1962 requesting literature. Horace Twiford, a national committeeman at large for the party in the State of Texas, was informed by the New York headquarters in July 1963 of Oswald’s request, and on September 11, 1963, he did mail literature to Oswald at his old post office box in Dallas.[C6-422] On his way to Mexico City in September 1963, Oswald attempted to contact Twiford at his home in Houston; Oswald spoke briefly with Twiford’s wife, identifying himself as a member of the Fair Play for Cuba Committee, but since Twiford was out of town at the time, Oswald was unable to speak with him.[C6-423] Arnold Peterson, national secretary and treasurer of the Socialist Labor Party, has stated that a search of the records of the national headquarters reveals no record pertaining to Oswald; he explained that letters requesting literature are routinely destroyed.[C6-424] The Socialist Party-Social Democratic Federation has also advised that a review of its records fails to reflect any information or correspondence pertaining to Oswald.[C6-425] _Fair Play for Cuba Committee._--During the period Oswald was in New Orleans, from the end of April to late September 1963, he was engaged in activity purportedly on behalf of the now defunct Fair Play for Cuba Committee (FPCC), an organization centered in New York which was highly critical of U.S. policy toward the Cuban Government under Fidel Castro. In May 1963, after having obtained literature from the FPCC,[C6-426] Oswald applied for and was granted membership in the organization.[C6-427] When applying for membership, Oswald wrote national headquarters that he had