Documents / Official release

65 HS1-834228961 62-HQ-83894 Section 005

Federal Bureau of Investigation · 209 pages · text by OCR, confidence 95%

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From the source:Release of 2026-05-08 Incident: N/A, N/A. The FBI's 62-HQ-83894 case file includes investigative records, eyewitness testimonies, and public reports concerning Unidentified Flying Objects and flying discs documented between June 1947 and July 1968. The records include high-profile incident accounts, photographic evidence from sites like Oak Ridge, TN, and technical proposals regarding potential propulsion systems. Additional topics include convention programs, researcher accounts, and extensive media coverage from the period. This file is partially posted on FBI vault with more redactions and some pages missing. Included here is the complete case file with several newly declassified pages and only minor redactions.

Open the PDF at page 137 Original source ↗
3. where the jets are fastened in I could not figure it out so will leave that to you the drawings I sent in sat. with the jet are O.K. That is the jet. - but some of the centrifugal power mechanism is wrong in design. Ubaldo had two or three sets of drawings and this copy I am sending you are plain and I believe better drawings. In drawing #2 where turn buckets are shown on cables - they are shortened or lengthened to suit - like this as the weights fly or pull outward - the weights must pull the cable straight out or up and down - see no weight in the line holding the weight to - line must be straight when engines are in motion and up to speed allowing everything else is in proportion O.K. drawing 3.

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Official release, from the pursue collection. The PDF is mirrored here; the original link is under it. The text was read from the page images by an OCR model (mean confidence 95%); expect the odd misread word. 209 pages are in the text index: search them above, or from the library's search.