Documents / Official release
This Federal Bureau of Investigation file section (62-HQ-83894, Section 4) collects 1947 to 1949 correspondence on flying discs. It includes Portland police officers' accounts of a silvery object over the city on September 11, 1947, an Alaska pilot's July 1947 sighting near Bethel, citizen letters answered by J. Edgar Hoover, and a 1948 Air Defense Command directive on disc investigations. The FBI replied that it was conducting no flying disc investigations. Later items concern William Albert Rhodes's disc photographs and a Los Angeles letter judged a probable prank.
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.
“Cooper”5 pages
... L-.40 • FEDERAL BUREAU OF INVESTIGA. N UNITED STATES DEPARTMENT OF JUSTICE Laboratory Work Sheet........OORDED 9/22/48 kag 9j3£ 62- 83894-146 vBe: Project "SIGN" File# PC-23142 COExamination of Soil. Lab. II Commanding General, Air Materiel Command, Wright- Patterson Examination requested by: ll:f AF Base, Dayton, Ohio Attention: ~CIAX0-3 Date of reference communication: letter 9/9 Date received: 9/17 Evid . 9/14 Reg.1171535 Examination requested: Micro (Petrographic- Geologic) Result of Examination: Examination by: JEVOJJS ~l, Sample of soil.
Official release, from the pursue collection. The PDF is mirrored here; the original link is above. 214 pages are in the text index: search them above, or from the library's search.