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
White House, PFIAB, Covert Action Panel Meeting 6/5/64 (Discussion with Secretary, Special Group, et al.),” Top Secret, June 5, 1964 description of the main document