PURSUE Record — FBI 62-HQ-83894 — Maury Island incident (June 21, 1947): Federal Bureau of Investigation · Maury Island, Puget Sound, Washington State · June 21

Declassified in May 2026 as part of PURSUE Release 01, FBI file 62-HQ-83894 is a formal investigation record produced by the Federal Bureau of Investigation in the summer and fall of 1947. It documents the bureau's inquiry into what became known as the Maury Island incident — a reported aerial encounter and alleged physical evidence drop that occurred on June 21, 1947, near Maury Island in Puget Sound, Washington State. The file predates the modern UAP conversation by nearly eight decades and stands as one of the oldest formally documented cases now in the public record.

What this record contains

The file, released as a single-part PDF by the FBI, centers on a report by Harold Dahl, who claimed that six doughnut-shaped objects appeared over his harbor patrol boat near Maury Island on June 21, 1947, and that one of them discharged slag-like material onto the vessel and surrounding water. The case drew in Fred Crisman, whose role in relaying and potentially embellishing the account became a significant thread in the investigation. Most consequentially, Air Force Intelligence dispatched Captain William Davidson and Lieutenant Frank Brown to investigate; both officers died when their B-25 aircraft crashed en route back to Hamilton Field in California — a development that layered additional tragedy and speculation onto an already contested case. According to the official description blurb accompanying the PURSUE release, both the FBI and the Air Force Office of Special Investigations (AFOSI) ultimately assessed the incident as a hoax.

The public release does not include supplementary metadata beyond what appears in the official description blurb. There is one file part in the release, consistent with a bounded, closed investigative record rather than an ongoing or multi-volume case file.

Historical & documentary context

The Maury Island incident occurred in the same compressed window — June and July 1947 — that produced Kenneth Arnold's sighting over Mount Rainier and the Roswell incident in New Mexico. The summer of 1947 represented the opening moment of the modern UFO era in the United States, and government agencies were simultaneously unprepared and under institutional pressure to respond. The FBI's formal involvement in aerial phenomena cases during this period was itself unusual and short-lived; cooperation between the bureau and Air Force investigators was tentative and at times contested. A file bearing a formal case number like 62-HQ-83894 signals that this was not a routine public inquiry but a tracked investigation with headquarters-level attention — a fact worth noting independent of the incident's ultimate assessment.

The physical evidence dimension — the reported slag-like material — also gave the Maury Island case a character distinct from purely visual sighting reports of the same era. Physical trace claims, even when later dismissed, tend to generate more thorough documentation, which may explain in part why this record warranted inclusion in a release spanning nearly eight decades of agency files.

What this does and does not prove

The documented facts in this release are that a formal FBI investigation occurred, that Air Force Intelligence was involved at the cost of two officers' lives in a subsequent crash, and that both the FBI and AFOSI reached a conclusion of hoax. What this record does not prove is that the hoax assessment is final or exhaustive — investigative conclusions drawn in 1947 are products of the analytical tools and institutional pressures of that moment. Equally, the existence of a formal government investigation record does not validate the underlying claims. The record documents the state's response to a reported event; it does not adjudicate the event itself. Declassified material of this age rewards careful reading, not reflexive conclusions in either direction.

How it fits PURSUE Release 01

Within the PURSUE Release 01 set, FBI 62-HQ-83894 represents the historic archive tier — one of the bureau's contributions to a release that also spans contemporary Department of War sensor data and NASA imagery. Its inclusion alongside modern mission records reflects PURSUE's stated longitudinal scope: a view of how U.S. agencies have encountered, documented, and assessed aerial phenomena across nearly eighty years. The release treats resolved cases like this one as evidence of analytical discipline, not embarrassment. For coverage of additional FBI archive cases and the full 162-document release, see other PURSUE Release 01 reporting on this blog.

Editorial note: This analysis is independent commentary on a publicly released document. The original record, source links, and full release metadata are catalogued on the SkyLens UAP files page alongside every other case in the PURSUE Release 01 set.