Short answer
DOW-UAP-D098 is a PURSUE-released U.S. Naval Photographic Interpretation Center memorandum assessing UFO films from Utah (2 July 1952) and Montana (1950), documenting methods, charts, tentative judgments, and limits - process documentation, not an ET verdict.
What this record is
This AnomalyWiki entry is a government-file page for DOW-UAP-D098. Issuing / holding agency listed in frontmatter: U.S. Department of War (Naval Photographic Interpretation Center holdings). Document / release dating: 1953 (PURSUE Release 05, 2026-08-07). Format: pdf. Release batch: PURSUE Release 05. Geographic focus noted on the record: Montana; Utah. It lives under the PURSUE / War.gov UFO archive hub so readers can open a primary file without treating every release as an origin verdict.
Use this page when you need (1) a neutral paraphrase of what the public file actually contains, (2) explicit non-claims, and (3) a durable sourceUrl for citation. Do not substitute podcast summaries for the PDF/image itself.
Agent-side cache path (not a public download mirror): tmp/sources/war-gov-ufo/release-05/DOW-UAP-D098.pdf.
Official PURSUE index title: DOW-UAP-D098, Film Analysis of Unidentified Objects, 1953.
What it says
The PDF records Navy PIC analysis requested by the Air Force of ~30 feet of processed 16mm color motion-picture film of unidentified objects taken in Utah on 2 July 1952, plus additional Montana 1950 footage. It presents test procedures, positional plots, luminosity/size charts, and discussion of candidate explanations. The official PURSUE index notes the Center assessed characteristics inconsistent with natural phenomena or commonly known aerospace technologies under the memo’s assumptions, while documenting confidence limits and recommending further, better-resourced investigation. Open the PDF for exact tentative conclusions and chart language.
Official PURSUE index description (paraphrase context)
This file contains a memorandum relating to the U.S. Naval Photographic Interpretation Center’s assessment of two films allegedly depicting unidentified airborne objects, captured in Montana and Utah in 1950 and 1952, respectively. The file documents the Center’s analytic process, assumptions that constrained its confidence level, tentative conclusions, and recommendations for future research. The Center assessed, generally, that the objects depicted in the film demonstrated characteristics that were inconsistent with those of natural phenomena or commonly known aerospace technologies. The memorandum documents the Center’s recommendation for a more well-resourced investigation to corroborate its presumptive findings, citing a lack of funding and personnel. The accompanying charts compare the film’s luminosity with the apparent angular size of the phenomena, using contemporary mathematical modeling and photogrammetric analysis techniques.
The block above tracks the War.gov/UFO catalog wording used in src/data/pursue-war-gov-ufo/manifest.json (asOf 2026-10-01). Prefer the primary PDF/image wording when it conflicts with secondary commentary.
Document-specific reading notes
Naval Photographic Interpretation Center work on the Utah (2 July 1952) and Montana (1950) films is process documentation: test procedures, positional plots, luminosity/size charts, tentative judgments, and recommendations for better-resourced follow-up. The PURSUE index notes the Center assessed characteristics inconsistent with natural phenomena or commonly known aerospace technologies under the memo’s assumptions, while documenting confidence limits. Pair - not collapse - with Blue Book’s later Tremonton case file DOW-UAP-D102 and the Ruppelt presentation DOW-UAP-D154. Charts are analytic aids, not modern sensor proof.
Key findings (reader takeaways)
- Naval PIC film analysis of Utah (2 Jul 1952) and Montana (1950) imagery
- Documents analytic assumptions, charts, and recommendations for further study
- Related Tremonton Blue Book file released as DOW-UAP-D102
How mainstream / institutional framing reads it
Classic photographic-interpretation primary source for 1950s film cases; historians cite it as process documentation with constrained confidence, not an origin verdict.
Claims vs mainstream
| Claim | Mainstream / encyclopedia view |
|---|---|
| The 1953 analysis proved alien craft on film. | The memo is analytic process documentation with constrained confidence - cite the PDF. |
| PURSUE republishing means modern DoD endorses ET. | PURSUE publishes historical holdings; it does not rewrite 1953 conclusions. |
| Ignore Naval PIC because Blue Book later said birds. | Encyclopedia pages should cite both the 1953 memo and later Blue Book assessments. |
What it does not say
Release of this memo does not confirm extraterrestrial craft. Later Project Blue Book assessments of related Utah (Tremonton) imagery should be read separately (DOW-UAP-D102). Charts are analytic aids, not modern sensor proof.
Additionally, encyclopedia use of this page should not:
- Upgrade “unresolved,” “interview,” “rendering,” or “administrative” labels into confirmed exotic hardware.
- Treat PURSUE publication timing (2026) as a modern DoD endorsement of every historical conclusion inside the file.
- Collapse adjacent document ids (companion renderings, film memos, Blue Book folders, AAWSAP CLINs) into a single claim.
- Invent redacted names, missing pages, or “smoking gun” clauses that are not visible in the public release.
How to read / access
Open the primary source: https://www.war.gov/medialink/ufo/release_05/Aug_07/documents/DOW-UAP-D098_Film-Analysis-of-Unidentified-Objects_1953.pdf.
Read the file’s own labels (IIR vs finished intel; FD-302 vs conclusion; rendering vs photograph; SOO vs field report).
Cross-check the official catalog blurb on war.gov/UFO / the editor manifest when you need batch, agency, or companion-id context.
For War.gov medialink verification in agent workflows, prefer Playwright MCP per
docs/agentic-knowledge/war-gov-ufo.mdrather than guessing URLs.Agents may run
pdftotext/ image inspection againsttmp/sources/war-gov-ufo/release-05/DOW-UAP-D098.pdfwhen an OCR extract already exists undertmp/sources/war-gov-ufo/extracts/.
Citation tip: quote the document id and release batch, then link the medialink URL. If you only need thematic browsing, start at the PURSUE archive hub instead of this deep-dive.
Related cases and objects
- pursue-war-gov-ufo
- dow-uap-d102-tremonton-blue-book-file
- dow-uap-d154-ruppelt-presentation-1952
- pursue-release-announcements
- Phenomena: project-blue-book
FAQ
Is this the Tremonton Blue Book file?
No. D098 is the 1953 Naval PIC film-analysis memo. DOW-UAP-D102 is the Blue Book Tremonton file.
Where is the PDF?
Use the sourceUrl on this page (War.gov medialink) or open DOW-UAP-D098 from the archive catalog.
Does the memo “prove aliens”?
No. It documents mid-century film interpretation with limited data and recommended further work.
Sources
Primary: DOW-UAP-D098 (U.S. Department of War (Naval Photographic Interpretation Center holdings); accessed via PURSUE / War.gov).
Portal: war.gov/UFO.
Editor index:
src/data/pursue-war-gov-ufo/manifest.json(not published as a public HTML dump).Hub guide: PURSUE / War.gov UFO collection.