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.
I I I future, it was imperative to develop a questionnaire form listing the factors necessary for evaluation of the observer and his report, and identification of the unknown objects. In addition, it was decided that such a questionnaire should be designed to serve as an interrogator's guide, and as a form for I the observer himself to complete when personal interrogation was not possi ble or practicable. I Ideally, a questionnaire for the purposes required should contain I questions pertaining to all technical details considered to be essential for the statistical approach, and should serve to obtain a maximum of informa tion from the average individual who had made a sighting in the past or would be likely to be reporting sightings in the future. Besides these ~is I crete facts, an integrated written description of a sighting would be re quired, thus enabling the reported facts of the sighting to be corroborated. I Also, a narrative description might allow subtle questions to be answered concerning the observer's ability, such as indirect questions that would I reveal his reasoning ability, suggestibility, and general mental attitude. As a whole, then, the information contained in a questionnaire should make possible the classification and evaluation of the sighting, the rating of the observer, the probability of accuracy of reported facts, and the identifica I tion of what was reported by the observer as unidentified. I During the course of this project, three questionnaire forms were I developed, each intended to be an improved revision of the one preceding. The improvements were suggested and confirmed by members of the panel of consultants connected with this project. I The original form was evolved by the panel of consultants as their first work on this project. It was intended to allow the start of the reduc tion of reports to discrete data, and was immediately subjected to exten I sive review and revision by the panel. The revised ( second) form was subjected to a trial test before adoption. A TIC sent a copy to observers reporting sightings, with the request that the form be completed and re I turned. Of the first 300 questionnaires returned during July and August, I 1952, 168 were analyzed by a consulting psychologist. On the basis of this analysis, plus the experience gained in working with past reports, the final form of the questionnaire - the U. S. Air Force Technical Information I Sheet - was evolved. Copies of the three forms of the questionnaire, in the order of their development, are shown as Exhibits BI, B2, and B3 in Appendix B. I In order to implement the transcription of data from past sighting I reports, each succeeding form was put to use as soon as it was developed and approved. Accordingly, experience was obtained with each form in relation to past data, an important factor in the improvement of the quality and completeness of the later reports included in this study. I I 5 I
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.