34 ↑ Ibid.
35 ↑ National Archives and Records Administration (NARA), https://www.archives.gov/research/military/air-force/ufos#bluebk; NARA, https://www.archives.gov/news/articles/project-blue-book-50th-anniversary; Department of the Air Force, Project Blue Book, (February 1, 1966); USAF, https://www.esd.whs.mil/Portals/54/Documents/FOID/Reading%20Room/UFOsandUAPs/2d_af1.pdf; Hector Quintanilla, Jr., "The Investigation of UFOs," Studies in Intelligence, Vol. 10, No. 4 (Fall 1966), pp. 95–110., https://catalog.archives.gov/id/7282832; Hector Quintanilla, Jr., "UFOs: An Air Force Dilemma" (unpublished manuscript, 1974); https://ia902205.us.archive.org/28/items/ufos-an-air-force-dilemma/quintanilla.pdf; Edward J. Ruppelt, The Report on Unidentified Flying Objects (Doubleday, 1956), https://ia801304.us.archive.org/22/items/FritjofCapraTheTurningPoint/Edward%20J%20Ruppelt%20-%20The%20Report%20on%20Unidentified%20Flying%20Objects.pdf; Gerald K. Haines, "CIA's Role in the Study of UFOs, 1947-90," Studies in Intelligence, Vol. 1, No. 1.
36 ↑ National Archives and Records Administration (NARA), https://www.archives.gov/research/military/air-force/ufos#bluebk; NARA, https://www.archives.gov/news/articles/project-blue-book-50th-anniversary; Department of the Air Force, Project Blue Book, (February 1, 1966), USAF, https://www.esd.whs.mil/Portals/54/Documents/FOID/Reading%20Room/UFOsandUAPs/2d_af1.pdf; Hector Quintanilla, Jr., "The Investigation of UFOs," Studies in Intelligence, Vol. 10, No. 4 (Fall 1966), pp. 95–110., https://catalog.archives.gov/id/7282832; Hector Quintanilla, Jr., "UFOs: An Air Force Dilemma" (unpublished manuscript, 1974); https://ia902205.us.archive.org/28/items/ufos-an-air-force-dilemma/quintanilla.pdf.
37 ↑ Department of Defense, Press Release, 17 December 1969.
38 ↑ National Archives and Records Administration (NARA), https://www.archives.gov/research/military/air-force/ufos#bluebk; NARA, https://www.archives.gov/news/articles/project-blue-book-50th-anniversary.
39 ↑ National Archives and Records Administration (NARA), https://www.archives.gov/research/military/air-force/ufos#bluebk; NARA, https://www.archives.gov/news/articles/project-blue-book-50th-anniversary; Department of the Air Force, Project Blue Book, (February 1, 1966), USAF, https://www.esd.whs.mil/Portals/54/Documents/FOID/Reading%20Room/UFOsandUAPs/2d_af1.pdf; Hector Quintanilla, Jr., "The Investigation of UFOs," Studies in Intelligence, Vol. 10, No. 4 (Fall 1966), pp. 95–110., https://catalog.archives.gov/id/7282832; Hector Quintanilla, Jr., "UFOs: An Air Force Dilemma" (unpublished manuscript, 1974);
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