Cryptonym: BLANKET
1951-1954: One of the leading lights in the International Rescue Center was Leo Cherne, a well-connected liberal that was extremely anti-communist, “of Agency interest since 1951,” and sometimes used for cover purposes. During the 1950s, Cherne had covert security clearances to provide cover in two different CIA programs, BLANKET and QKENCHANT.
104-10106-10839: RENEWAL OF LIAISON CLEARANCE FOR EDWARD L. FREERS
8/12/59, Request for Approval of Liaison from CPP/LO Howard Bucknell, Jr. to Chief, Employee Activity Division, PSD/OS: "Renewal of liaison clearance expiring 10 Sept. 1959 is requested to permit discussion of NSC 5212/2 matters on a need-to-know basis. This is a BLANKET request."
104-10051-10106: THE LEE HARVEY OSWALD CASE #351164
1/29/64, from M.D. Stevens to Files: "Abram Chayes, Legal Officer of the State Department, was one of the two persons immediately responsible for Oswald's being permitted to return to the United States from the Soviet Union in June 1962...(Chayes) was granted security approval for liaison contact with J. Foster Collins (in the office of the Chief of the Covert Action staff) on 6 March 1961. The request for CHAYES' clearance was a 'Blanket' request to permit discussion with him of 5412/2 matters on a need-to-know basis...In March 1962, Chayes was granted a renewal of his liaison contact clearance with C/CA on a continuing basis. This time his contact was Archibald ROOSEVELT, Jr."