of which were unsolicited, were utilized. The Zapruder film was analyzed, along with other photographs and documents from agencies including the CIA, and Kennedy's autopsy materials were examined by a panel of medical consultants. The commission ultimately upheld the Warren Commission's finding that there was one assassin and found no link between the CIA and Oswald or Ruby, calling the allegations "farfetched speculation." Relationship with Church Committee and dissolution As of mid-April 1975, Commission Lawyer David Belin "expected to have the assassination portion of the panel report complete by the end of the month. He so informed White House officials. However, the CIA dragged its feet on providing materials, and Secretary of State Henry Kissinger, who initially promised cooperation, provided little", according to the National Security archive. The commission had an at times contentious relationship with the Church Committee, as both were seeking out the same CIA documents, including the "Family Jewels". This went as far as Senator Church speculating that documents were being withheld from his committee by Rockefeller's. This led him, along with Senator John Tower, Committee Chief Counsel Fritz Schwartz and Minority Counsel Smothers, to personally visit Vice President Rockefeller in early May 1975. The committee members requested access to the evidence and transcripts possessed by the Rockefeller Commission but were denied by the Vice President, who cited the need for the President himself to grant them access. Ford had ordered the commission to extend its life by two months in order to investigate CIA assassinations, but on May 25 the commission moved to drop the assassinations and close its investigation. On June 9 the President publicly promised the Rockefeller Commission's files to the Church Committee, and they were delivered after two weeks and additional requests. Even after the Rockefeller investigation ended, Church Committee's members complained in private that they were being denied access to CIA documents by both the White House and the agency itself, receiving less access than the Rockefeller Commission had. CIA cooperation The investigators sought CIA documents on assassination plots conducted in its history and information on administrative routines and questioned key witnesses. One of these witnesses, CIA lawyer John S. Warner, admitted that "the agency had 'no specific authorization' to conduct assassinations." He added that he was "'not clear' that a president had the constitutional authority to order an assassination, though that 'might' lie within his powers." Peter Clapper, director of public