อ้างอิง ของ พ.ศ. 2499 เหตุการณ์ชนกันกลางอากาศเหนือแกรนด์แคนยอน

  1. "FAA Registry (N6324C)". Federal Aviation Administration.
  2. "FAA Registry (N6902C)". Federal Aviation Administration.
  3. CAB Docket 320, File 1, History of Flights, Section 1, issued 1957/04/17
  4. CAB Docket 320, File 1, History of Flights, Section 2, issued 1957/04/17
  5. "IFR Rules and Procedures – En Rouite and Holds, Langley Flying School". Archived from the original on July 3, 2013. Retrieved July 2, 2013.
  6. CAB Docket 320, File 1, History of Flights, Section 1, Paragraph 5, issued 1957/04/17
  7. CAB Docket 320, File 1, History of Flights, Section 2, Paragraph 5, issued 1957/04/17
  8. Blind Trust, by John J. Nance, William Morrow & Co., Inc. (US), 1986, ISBN 0-688-05360-2, pp. 90–92
  9. CAB Docket 320, File 1, Analysis, Paragraph 5, issued 1957/04/17
  10. CAB Docket 320, File 1, Analysis, Paragraph 6, issued 1957/04/17
  11. Cloudberg, Admiral (January 24, 2023). "Into the Abyss: The 1956 Grand Canyon Mid-air Collision". Medium. Retrieved February 16, 2023.
  12. CAB Docket 320, File 1, Investigation, Paragraphs 41–43, issued 1957/04/17
  13. Blind Trust, by John J. Nance, William Morrow & Co., Inc. (US), 1986, ISBN 0-688-05360-2, pp. 96–97
  14. CAB Docket 320, File 1, Investigation, Paragraphs 2–3, issued 1957/04/17
  15. "The beginnings of air-rescue 1946–1959". Rega. Archived from the original on July 27, 2019.
  16. "29 DC-7 DEAD IDENTIFIED; Mass Services to Be Held for 29 Others in Canyon Crash". The New York Times. July 11, 1956. p. 1.
  17. CAB Docket 320, File 1, Probable Cause, issued 1957/04/17
  18. Cadwalader, Mary H. (April 29, 1957). "Air Mystery is Solved". Life. pp. 151–164.
  19. "June 30, 1956: Trans World Airlines / United Air Lines, Lockheed L-1049 (N6902C) / Douglas DC-7 (N6324C) Mid-Air Collision, Grand Canyon, AZ". lostflights.com.
  20. Jones, Tia (May 2, 2014). "Grand Canyon Collision Declared a National Historic Landmark". Grand Canyon Visitor Center. Retrieved September 11, 2023.
  21. "Civil Aeronautics Board Accident Investigation Report" (PDF). Federal Aviation Administration. Archived from the original (PDF) on February 20, 2015. Retrieved March 20, 2014.
  22. "Air Crash Damages Set". The New York Times. Associated Press. September 24, 1960. p. 5. Retrieved April 18, 2023.
  23. "National Historic Landmarks in Arizona" (PDF). National Park Service. Retrieved July 7, 2017.
  24. "1956 Grand Canyon TWA-United Airlines Aviation Accident Site" (PDF). National Park Service. Retrieved July 7, 2017.
  25. LaFrance, Adrienne (April 24, 2014). "The Site of a 1950s Plane Crash Just Became a National Landmark". The Atlantic. Retrieved April 28, 2014.
  26. Grady, Mary (April 30, 2014). "Historic Plane Wreck Site Protected". AVweb. Retrieved May 3, 2014.
  27. "The Internet Movie Database: UFO Files (Season 3: Black Box UFO Secrets)". The Internet Movie Database.