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Project Blue Book:

Blue Book, the final more or less public U.S. Air Force UFO investigation took over from Project Grudge in 1952 and lasted until December 1969. By this time, almost 13,000 sighting reports had been collected by all three projects combined. Approximately 600-700 cases remained unexplained (depending on which Air Force statistics are accepted). However, it is notable that hundreds of other cases have been labeled as explained without adequate justification and often in ways counter to known facts. Thousands of reports received conditional explanations (e.g., "possible balloon"; "probable aircraft"). But when the annual statistics were compiled, the qualifiers were dropped and "possible balloons" would become definite balloons, as if speculative answers were established facts. The project was closed down in late 1969, concluding that the continuation of Project Blue Book "cannot be justified, either on the ground of national security or in the interest of science... A panel of the National Academy of Sciences concurred in these views, and the Air Force has found no reason to question this conclusion." The memorandum recommending this action made it clear that the system which had long dealt with "reports of UFOs which could affect national security would continue to be handled through the standard Air Force procedures designed for this purpose," namely as it had all along - separately, "not part of the Blue Book system and in accordance with JANAP 146 or Air Force Manual 55-11." 146 After the end of Project Blue Book, its case files were opened to public inspection at the Air Force Archives. They were withdrawn in 1974, to reappear in 1976 in the U.S. National Archives, after the names of all witnesses had been censored, thus preventing the reinvestigation of cases until the names were later republished by ufologists.

Table of content:

• Cases that Blue Book considers "explained"
• List of Blue Book cases
• Summary, names, dates of 700 unexplained Blue Book cases
• Some filmings stored in the Blue Book Archives
• More information on Project Blue Book
• A Blue Book Case? No, the report has been destroyed
• Manuscript by Project Blue Book’s Lt. Col. Hector Quintanilla
• Photographs
• Minutes, April 2, 1952, Kirkland, Ruppelt and the Civilian Saucer Investigations
• The memo of Project Blue Book termination
• What Ruppelt told in the Press
• The real story of Blue Book by its first chief
• Ruppelt's who is who: what did the military really think?
• Faq: where are the Blue Book files now?
• The status reports of Project Blue Book

USAF BLUE BOOK CONSIDERS THESE CASES AS EXPLAINED:

Explained? A bitter joke.

BLUE BOOK FORGOT TO LIST SOME CASES:

Some cases were simply forgotten in the case listing and forgotten in the unexplained case listing:

USAF BLUEBOOK CASES OFFICIALLY LISTED AS UNKNOWN:

The list underneath is of 701 UFO reports, representing all of the "unexplained" sightings recorded by the Air Force's Project Bluebook, a 17 activity. The list provides the dates, locations, and Bluebook case numbers for the incidents. Remember that a lot of so called "explained" cases are not correctly explained: you would read that a case is due to "birds" when actually the birds explanation does not fit, for example. I also included a number of cases that do have a commonplace explanation.

Here is a more detail listing with summaries, names, dates of 700 unexplained Bluebook cases.

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This page was last updated on August 28, 2015.