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CIA-UAP-015, Project Blue Book Special Report No. 14 (Analysis of Reports of Unidentified Aerial Objects)

Central Intelligence Agency · 312 pages · text from the file's own layer

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.

Open the PDF at page 108 Original source ↗ 
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Table A59.
Table A60.
Table A61.
Table A62.
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Table A64.
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Table ABO.
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INDEX OF TABLES
(Continued)
Evaluation of All Sightings for 1952 by Sighting Reliability Groups,
Civilian Observers 139
Reported Colors of Objects Sighted by Years, All Sightings 140
Reported Colors of Objects Sighted by Years, Unit Sightings 140
Reported Colors of Objects Sighted by Years, Object Sightings 140
Evaluation of All Sightings for All Years by Colors Reported . 141
Evaluation of Unit Sightings for All Years by Colors Reported 142
Evaluation of Object Sightings for All Years by Colors Reported 143
Evaluation of All Sightings for All Years by Number of Objects per Sighting,
One Object 144
Evaluation of All Sightings for All Years by Number of Objects per Sighting,
Two Objects . 144
Evaluation of All Sightings for All Years by Number of Objects per Sighting,
Three to Ten Objects • 145
Evaluation of All Sightings for All Years by Number of Objects per Sighting,
Eleven or More Objects . 145
Evaluation of All Sightings for All Years by Number of Objects per Sighting,
Number of Objects Not Stated . 146
Evaluation of Unit Sightings for All Years by Number of Objects per Sighting,
One Object 147
Evaluation of Unit Sightings for All Years by Number of Objects per Sighting,
Two Objects . 147
Evaluation of Unit Sightings for All Years by Number of Objects per Sighting,
Three to Ten Objects . 148
Evaluation of Unit Sightings for All Years by Number of Objects per Sighting,
Eleven or More Objects . 148
Evaluation of Unit Sightings for All Years by Number of Objects per Sighting,
Number of Objects Not Stated . 149
Evaluation of Object Sightings for All Years by Number of Objects per Sighting,
One Object 150
Evaluation of Object Sightings for All Years by Number of Objects per Sighting,
Two Objects • 150
Evaluation of Object Sightings for All Years by Number of Objects per Sighting,
Three to Ten Objects . 151
Evaluation of Object Sightings for All Years by Number of Objects per Sighting,
Eleven or More Objects . 151
Evaluation of Object Sightings for All Years by Number of Objects per Sighting,
Number of Objects Not Stated . 152
Evaluation of All Sightings by Duration of Sighting, All Years 153
Evaluation of All Sightings by Duration of Sighting, 1947 153
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Case file, from the pursue collection. The PDF is mirrored here; the original link is above. 312 pages are in the text index: search them above, or from the library's search.