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Project Blue Book Special Report (second copy)

Internet Archive · 309 pages · text from the file's own layer

This is Project Blue Book Special Report No. 14, "Analysis of Reports of Unidentified Aerial Objects," Project No. 10073, dated 5 May 1955. The study reduced about 4,000 sighting reports received by the U.S. Air Force between June 1947 and December 1952 to IBM punched cards and analyzed them statistically, including chi square tests comparing knowns with unknowns. It concludes that the reports very probably do not represent technological developments beyond present scientific knowledge, and it notes that no case produced physical evidence.

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12. Describe what you saw as briefly as possible in the following spaces:
e
a. Sound b. Shape __
c. Color d« Size
e • Number ^_
g. Li^ht color_
i • Speed
f. Light brightness
h. Motion
0. Other
13« How did object disappear from view: Suddenly or Gradually
Circle One
At any time did the object:
a. Change direction, b. Change speed, c. Move behind somethingj Cloud,
House, Tree, d. Blond with background, e. Decrease
Other
in sise. f. Decrease in brightness, g. Move in front of something.
: h . _ _ . • .
OEner
15• When you first looked at the object, what direction were you facing?
16# I/hen you last saw the object, what direction were you facing?
17* In the following Sketch A, draw lines
from the observer's eye to the circular
arc to show the apparent elevation of the
object in the sky.
A. When first seen, label a.
B. When last seen,, label b.
Directly
Overhead
Observer's
Lye
H^riz n
SKLTCH
262

Cases discussed

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Report, cited by the archive. The PDF is mirrored here; the original link is above. 309 pages are in the text index: search them above, or from the library's search.