On 16 December 1948, an order was given by the Air Force director of research to change name of Project Sign to Project Grudge.
Web Resources
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Book References
For discussion of this order see the following:
Year |
Discussion by:
|
No. of Pages |
Dolan, Richard M in his “UFOs and the National Security State: Volume 1: 1941-1973” (2000) (available on Amazon USA and on Amazon UK) at page 110 (in Chapter 3) of the Keyhole softcover edition, at pages 65 of the 2002 revised Hampton Road softcover edition. |
1 |
|
Hall, Michael David in his “UFOs : A Century of Sightings” (1999) (available on Amazon USA and on Amazon UK) at page 117 (in Chapter 3) of the Galde Press softcover edition. |
1 |
|
Jacobs, David Michael in his “The UFO Controversy in America” (1975) (available on Amazon USA and on Amazon UK) at page 50 of the |
1 |
|
Quintanilla, Hector (Major) in his unpublished manuscript entitled “UFOs: An Air Force Dilemma” (copyright 1974) at page 8 of the manuscript, at page 21 of the NIDS pdf version available free on-line on various websites, including at the following links: http://www.projectbluebook.us/UFOs%20An%20Air%20Force%20Dilemma%20By%20Quintanilla.pdf |
1 |
Other Material