Documents / Case file
This CIA archives copy, released in 2026, holds Project Blue Book Special Report No. 14 (Analysis of Reports of Unidentified Aerial Objects). The Air Technical Intelligence Center at Wright-Patterson Air Force Base issued it on 5 May 1955. The study reduced about 4,000 sighting reports from 1947 to 1952 to IBM punched cards, with 3,201 cases charted, and applied chi square tests to compare known and unknown sightings. It concludes that it is highly improbable the reports represent technological developments beyond present-day scientific knowledge.
From the source:Release of 2026-06-12 This is the USAF Project Blue Book with a CIA cover sheet stating the document is "Official Record Copy." With the exception of the handwritten note on the first page, the content of this document has been available on CIA's public website.
“Sea”2 pages
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X
y
0
CODES
CODE 1. GENERAL
a. These cards (and the corresponding WORK SHEETS) contain data from
several sources. Columns referenced to the u. s. Air Force Technical
Information Sheet (Form A) must have at least one entry. If no data
are available for any column, the Y (or 12 punch) should be used.
b. Columns 22, 23, 24, 25, 26, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45,
46, 47, 48, 49, 50, and $1 are calculated from data appearing in the
u. s. Air Force Technical Information Sheet {Form A). If the basic
data for these calculations are not available, the appropriate columns
are left blank.
c. If a number in any column is used to enter data, then X (or 11 punch)
qualifies the data as indicated in the Code for the specific column,
CODE 7 SIGHTING IDENTIFICATION
{Ti.1is column may or may not
contain multiple punches) CODE 22 LOCAL SUN TIME
(Refers to date of a.c.T. observation)
X
y
0 Same day
1 All sightings 1 Previous day
22 Unit sightings, all observers
3 Unit sightings, single observers
4 Unit sightings, multiple observers
5 Object sightings
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7
8
9
CODE 23-26 LOCAL SUN TIME
{Calculated from G.C.T.,
date, latitude, and longitude)
3
4
5
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9
CODE 27 LATITUDE
X South Latitude
y
0
1
2
3
4
5
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7
8
9
303
CODE 31 LONGITUDE
X East Longitude
y
0
1
2
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5
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9 Case file, from the pursue collection. The PDF is mirrored here; the original link is under it. 312 pages are in the text index: search them above, or from the library's search.