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Project Blue Book Special Report No. 14 (1955)

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In 1955 the Air Force had 3,201 sighting reports coded and run through statistics to answer one question: were the unknowns different from the knowns? This is the study, with its charts and working forms. Read what it found and what critics said it left out.

Public domain copy

Made byUnited States Air Force
Issued byUnited States Air Force (Air Technical Intelligence Center)
Date1955
LanguageEnglish
FilePDF 20.7 MB
DownloadOriginal source

Where this comes from

This is a public-domain copy. The line below says where the file comes from and why we may host it.

Why we can share it: Published by the US Air Force in 1955. The report states on its title pages: "No copyright material is contained in this publication." A US publication from before 1978 without a copyright notice is in the public domain.

Read the story behind it

RecordProject Blue BookBetween 1947 and 1969 the US Air Force logged 12,618 UFO reports. When it closed the files, 701 still carried the label unidentified. Even its own scientific consultant later mocked it as a society for explaining the uninvestigated. What did the Air Force conclude, and what do the unexplained cases actually mean?EventThe 1952 Washington, D.C. UFO SightingsIn July 1952, radar at Washington's airports tracked unknown targets two weekends running, and fighter jets were sent up over the capital. The story reached the White House, and the Pentagon held a huge press conference. The official answer was weather. A newspaper headline said saucers swarmed over the capital. Was it?

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