White House, “Minutes of Meeting of January 30, 1964,” [The President’s Foreign Intelligence Advisory Board Meeting with President Lyndon B. Johnson], Top Secret, January 30, 1964 description of the main document
CIA, “Minutes of Meeting of the Special Group, April 25, 1963,”Secret Eyes Only, April 25, 1963 [with April 26 Memorandum for the Record attached] description of the main document