U.S. Air Force Flying Discs File, 1952
🏛️ Department of War
This file is an archival collection of U.S. Air Force Director of Intelligence records relating to reported “flying disc” incidents during the period from September through December 1952. Drawn from multiple governmental and non-governmental sources, it compiles a wide range of material associated with reported sightings and official handling of those observations, rather than presenting a single analytical conclusion on the nature or origin of “flying discs.” The contents include correspondence, memoranda, reporting forms, case summaries, distribution and routing material, and other administrative or intelligence-related documentation tied to flying-disc reporting and review during that period. Pages 26-36 of the file refer to an incident reported near Tremonton, Utah, in July 1952, in which a U.S. Navy Warrant Officer recorded film of unidentified objects that the Air Force later assessed were likely seabirds. Overall, the file is a broad documentary collection reflecting how such reports were recorded, circulated, and evaluated in late 1952.
Key points
- 🏛️ Official U.S. government release — batch 6 (Sep 18, 2026)
- Official file: DOW-UAP-D105
- When: September - December 1952
- Where: Various
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The description above is the government’s own, from the official release. The official file is linked on this page.
Department of War. (1952). U.S. Air Force Flying Discs File, 1952. https://www.war.gov/medialink/ufo/sept-18/release-06/assets/DOW-UAP-D105_US-Air-Force-Flying-Discs-File-September-December-1952.pdfRelated records
Final Personnel Record for Newhouse, Delbert C., U.S. Navy, 1957
Department of War
This file contains the final personnel record of U.S. Navy Chief Warrant Officer Delbert C. Newhouse, who left naval service as a Chief Warrant Officer 4, then the highest Warrant Officer grade. In July 1952, Newhouse recorded 16mm motion-picture film near Tremonton, Utah; the film later became the subject of a Project Blue Book investigation. Project Blue Book was the U.S. Air Force program active from 1952 to 1969 that investigated the nature and origin of unidentified flying objects (UFOs). In addition to documenting routine assignments and training, the file records Newhouse’s career progression as a Photographer’s Mate, a Navy enlisted specialty responsible for photography and related imaging work. Project Blue Book investigators characterized Newhouse as an expert photographer based on his naval experience.
Correspondence Relating to Project Blue Book, 1955
Department of War
This file contains correspondence relating to Project Blue Book, a 1952-1969 U.S. Air Force program to investigate the nature and origin of unidentified flying objects (UFO). The correspondence includes letters and memoranda sent between various departments and agencies of the U.S. Government, the Legislative Branch, and private citizens concerning UFO sightings and the research and findings of Project Blue Book.
Joint U.S.-Canadian Aviation Projects and UFO Sighting Reports, 1954-1955
Department of War
This file contains reports, memoranda, and correspondence concerning various then-developmental vertical take-off and landing (VTOL) aircraft. The file includes assessments of the experimental potential of the “Avro Project Y2,” a joint U.S.-Canadian near-circular VTOL aircraft that is similar in appearance to contemporary popular descriptions of unidentified flying objects (UFO). A 1954 memorandum opines that VTOL aircraft with a circular planform may be mistaken for UFOs to observers unfamiliar with such technologies. It also recommends that UFO reports in the vicinity of Soviet military operations or assets be re-examined to assess whether they may be attributable to previously unknown advanced VTOL aircraft of foreign design. The file also contains correspondence relating to a UFO incident involving a U.S. Air Force (USAF) KC-97 flying near Newfoundland, Canada in July 1955. A USAF committee found that the characteristics described in the report were inconsistent with those of known Soviet, American, or Canadian military systems. The committee was also “unable to explain the simultaneous ground radar returns and aircrew visual sightings.” It also contains correspondence relating to the potential value of data from incidental radar collection of meteors entering the atmosphere. USAF Air Research and Development Command recommended using that data to improve the performance of the AN/FPS-17 radar system. Finally, the file contains correspondence indicating support for the Communications Instructions for Reporting Vital Intelligence Sightings (CIRVIS) program, a joint U.S.-Canadian civil-military program to standardize reporting methods for unusual or unidentified airborne and maritime hazards and threats.
Project Blue Book Photo File Relating to Tremonton Film, Utah, 1952
Department of War
During its investigation of a July 1952 film of an incident reported near Tremonton, Utah, Project Blue Book examined whether the objects recorded on film might have been “pillow balloons.” Project Blue Book was a U.S. Air Force program active from 1952 to 1969 that investigated the nature and origin of unidentified flying objects (UFOs). In December 1952, investigators contacted General Mills, Inc., the only known manufacturer of pillow balloons at the time, to determine whether a balloon release could account for the incident. The file includes example imagery of pillow balloons supplied by General Mills Research Laboratories. In late December 1952, Project Blue Book personnel, balloon specialists, and representatives from General Mills reviewed the Tremonton footage. The group’s consensus was that the objects closely resembled pillow balloons in flight and behaved consistently with that explanation. One General Mills representative was less convinced, noting that the objects appeared somewhat too bright and seemed to maneuver too rapidly. The reviewers also questioned previous angular-velocity calculations suggesting that the objects moved at a high rate of speed because those calculations depended on the unverified assumption that the camera operator had held the camera still during filming. Subsequent efforts to identify a pillow-balloon release in the Tremonton area were unsuccessful. The file also considered seabirds as a possible explanation, citing similar films showing seabirds as bright points of light under comparable conditions. Later Air Force assessments favored the seabird attribution.