In addition to the assistance afforded by Federal agencies, the Commission throughout its inquiry had the cooperation of representatives of the city of Dallas and the State of Texas. The attorney general of Texas, Waggoner Carr, aided by two distinguished lawyers of that State, Robert G. Storey of Dallas, retired dean of the Southern Methodist University Law School and former president of the American Bar Association, and Leon Jaworski of Houston, former president of the Texas State Bar Association, has been fully informed at all times as to the progress of the investigation, and has advanced such suggestions as he and his special assistants considered helpful to the accomplishment of the Commission’s assignment. Attorney General Carr has promptly supplied the Commission with pertinent information possessed by Texas officials. Dallas officials, particularly those from the police department, have fully complied with all requests made by the Commission. THE INVESTIGATION During December and early January the Commission received an increasing volume of reports from Federal and State investigative agencies. Of principal importance was the five-volume report of the Federal Bureau of Investigation, submitted on December 9, 1963, which summarized the results of the investigation conducted by the Bureau immediately after the assassination. After reviewing this report, the Commission requested the Federal Bureau of Investigation to furnish the underlying investigative materials relied upon in the summary report. The first investigative reports submitted in response to this request were delivered to the Commission on December 20, 1963. On December 18, the Secret Service submitted a detailed report on security precautions taken before President Kennedy’s trip to Texas and a summary of the events of November 22, as witnessed by Secret Service agents. A few days later the Department of State submitted a report relating to Oswald’s defection to the Soviet Union in 1959, and his return to the United States in 1962. On January 7 and 11, 1964, the attorney general of Texas submitted an extensive set of investigative materials, largely Dallas police reports, on the assassination of President Kennedy and the killing of Oswald. As these investigative reports were received, the staff began analyzing and summarizing them. The members of the legal staff, divided into teams, proceeded to organize the facts revealed by these investigations, determine the issues, sort out the unresolved problems, and recommend additional investigation by the Commission. Simultaneously, to insure that no relevant information would be overlooked, the Commission directed requests to the 10 major departments of the Federal Government, 14 of its independent agencies or commissions, and 4 congressional committees for all information relating to the assassination or the background and activities of Lee Harvey Oswald and Jack Ruby.