Step 1 : Introduction to the question "What commission was established to investigate the assassination of John F. Kennedy?"
...The Warren Commission was authorized by President Johnson to investigate the death of President John F. Kennedy. It was headed by Chief Justice of the Supreme Court, Earl Warren. Warren had previously served as the governor of California and had served on the Supreme Court since 1953. Other members of the commission included a former president of the World Bank, two senators and representatives and a former director of the Central Intelligence Agency. It took almost one year for the commission to issue a report that was 888 pages long and concluded that Oswald acted alone in the assassination of the president.