Discover Our Collections Type > Text (remove) Specific Item Type > Folder (remove) Subject > Nuclear weapons (remove) Date > 1964-06-19 (remove) Limit your search Tag Digital item (1) Date 1964-06-19 (1) Subject Nuclear weapons (1) Type Text (1) Collection National Security Files (1) Series National Security Action Memorandums (1) Specific Item Type Folder (1) Time Period Presidential (Nov. 22, 1963-Jan. 20, 1969) (1) 1 results Folder, "NSAM # 307: Review of Underground Nuclear Tests, 6/19/1964," National Security Action Memorandums, NSF, Box 5 (Item)