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Project Bluebook:

Bluebook, the final open U.S. Air Force UFO investigation took over from Project Grudge in 1952 and lasted until Dec 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 Bluebook "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 Bluebook system and in accordance with JANAP 146 or Air Force Manual 55-11." 146 After the end of Project Bluebook, 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 They were withdrawn in 1974, to reappear in 1976 in the U.S. National Archives, after the names of all witnesses had been censored, thus preventing the reinvestigation of cases.

See the main page about Project Bluebook for more information.

Frequently asked questions about Bluebook:

Where are the Bluebook files now?

If you visit the web site, which is the official website for the US National Archives, you will learn exactly what I have reproduced underneath (emphasis added by myself):

"The United States Air Force retired to the custody of the National Archives its records on Project BLUE BOOK relating to the investigations of unidentified flying objects. Project BLUE BOOK has been declassified and the records are available for examination in our research room. The project closed in 1969 and we have no information on sightings after that date."

"Textual records of Project BLUE BOOK (the documentation relating to investigations of unidentified flying objects), excluding names of people involved in the sightings, are now available for research in the National Archives Building. The records include approximately 2 cubic feet of unarranged project or administrative files, 37 cubic feet of case files in which individual sightings are arranged chronologically, and 3 cubic feet of records relating to the Office of Special Investigations (OSI), portions of which are arranged chronologically, by OSI district, and by overseas command. A cubic foot of records comprises about 2,000 pages. Finding aids for these records include a file list for the project files and an index to individual sightings, entered by date and location."

"Access to BLUE BOOK textual records is by means of 94 rolls of 35mm microfilm (T-1206) in the National Archives Microfilm Reading Room. The first microfilm roll includes a list of contents for all of the rolls and the finding aids. Photographs scattered among the textual records have also been filmed separately on the last two rolls."

"Motion picture film, sound recordings, and some still pictures are maintained by the Motion Picture & Sound & Video Branch (NNSM) and the Still Picture Branch (NNSP)."

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This page was last updated on March 10, 2002.