Documents / Analysis
Special Report No. 14 was issued by the U.S. Air Force's Air Technical Intelligence Center on 5 May 1955. It is a statistical study of about 4,000 reports of unidentified aerial objects from June 1947 to December 1952. The reports were reduced to IBM punched cards and analyzed with methods including chi square tests. The report concludes that the reports it examined are very unlikely to represent technology beyond present scientific knowledge, and it notes that no case produced valid physical evidence.
“Midwest”5 pages
//Other / /12.3% Aircroft 30.5% Insuf., info. 16.2 % Balance of Central East Region 81 object sightings Netf/wrk/ 106 object sighting 61 obiect sightings Insuf. Info I Balloon 1.6% \ 21.3% / Aircraft 29.5% Washingto 146 object sightl FIGURE 3 3 COMPARISON OF EVALUATION OF OBJECT SIGHTINGS IN THE STRATEGIC AREAS OF THE CENTRAL EAST REGION if B-75M
Analysis, from the classic collection. The PDF is mirrored here; the original link is under it. 309 pages are in the text index: search them above, or from the library's search.