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Release 1

  1. "The Gulf of Tonkin Incident," CRYPTOLOG, Feb-Mar 1975 (246KB PDF)
  2. "Skunks, Bogies, Silent Hounds, and the Flying Fish: The Gulf of Tonkin Mystery, 2-4 August 1964" Cryptologic Quarterly, Winter 2000/Spring 2001 Edition, Vol. 19, No. 4 / Vol. 20, No. 1 (4.53MB PDF)

Release 2

  1. "The Gulf of Tonkin Incident," R.A. MacKinnon, LCDR, USN (ret.); 30 May 1975 (607MB PDF)
  2. "Chapter 6: The Gulf of Tonkin Incident The DESOTO Patrols and OPLAN 34A," National Cryptologic School, Sep 1986 (902KB PDF)
  3. "American Cryptology During the Cold War, 1945-1989," 1995 (999KB PDF)
  4. "Thoughts on Intelligence Related to the Gulf of Tonkin Mystery: The SIGINT Hounds Were Howling"; 5 Dec 2005 (217KB PDF)

Please Note: These historical documents are PDF images of formerly classified carbon paper and reports that have been declassified. Due to the age and poor quality of some of the PDF images, a screen reader may not be able to process the images into word documents. In accordance with Section 504 of the Rehabilitation Act of 1973, as amended, individuals may request that the government provide auxiliary aids or services to ensure effective communication of the substance of the documents. For such requests, please contact the Public Affairs Office at 301-688-6524.


Historical Document | Date Posted: Jan 15, 2009