National Security Action Memorandum Number 235: Large-Scale Scientific or Technological Experiments with Possible Adverse Environmental Effects, April 17, 1963
04/17/1963
The Papers of John F. Kennedy, Presidential Papers, National Security Files, Meetings and Memoranda Series, National Security Action Memoranda, National Security Action Memorandum Number 235. John F. Kennedy Presidential Library and Museum, Boston, Massachusetts
Public Domain