10 ↑ Hector Quintanilla, Jr., "UFOs: An Air Force Dilemma" (unpublished manuscript, 1974), https://ia902205.us.archive.org/28/items/ufos-an-air-force-dilemma/quintanilla.pdf; Edward J. Ruppelt, The Report on Unidentified Flying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
11 ↑ National Archives and Records Administration, https://www.archives.gov/news/articles/project-blue-book-50th-anniversary; 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
12 ↑ 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
13 ↑ Ibid.
14 ↑ Ibid.
15 ↑ Gerald K. Haines, "CIA's Role in the Study of UFOs, 1947-90," Studies in Intelligence, Vol 1, No. 1, (1997), pp. 67–84; USAF https://www.secretsdeclassified.af.mil/Portals/67/documents/AFD-110719-005.pdf?ver=201607-19-142520-690; Project Grudge Report, https://www.academia.edu/43389931/Project_GRUDGE_Report_1949USA
16 ↑ Gerald K. Haines, "CIA's Role in the Study of UFOs, 1947-90," Studies in Intelligence, Vol 1, No. 1, (1997), pp. 67–84; Mihm, S., "US Government Has Been Dancing Around UFOs for 75 Years." The Washington Post. 2023, https://www.washingtonpost.com/business/us-government-has-been-dancing-around-ufos-for-75-years/2023/02/22/7ce50280-b2c4-11ed-94a0-512954d75716_story.html
17 ↑ https://www.archives.gov/news/articles/project-blue-book-50th-anniversary
18 ↑ 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.
19 ↑ Ibid.
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