ⓘ
1919 •
A nonfiction investigation into UFOs, disappearances, supposedly mythological beings, and other phenomena.
The Flying Saucers Are Real
Donald Keyhoe
18 days
•
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1950 •
An investigation of several encounters between the U.S. Air Force and unidentified flying objects in the late 1940s.
The Report on Unidentified Flying Objects
Edward J. Ruppelt
36 days
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ⓘ
1956 •
A memoir of Ruppelt's role in the U.S. Air Force and Project Blue Book, a study into unidentified flying objects.
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