{"type":"documents","slug":"2026-pursue-release-04-003-dow-uap-d097-project-sign-progress-report-1948","title":"DOW-UAP-D097, Project Sign Progress Report, 1948","url":"https://disclosdex.com/documents/2026-pursue-release-04-003-dow-uap-d097-project-sign-progress-report-1948","description":"An Air Materiel Command report presents the initial 1948 Project Sign progress update on unidentified flying object reports.","date":"1948-01-01T00:00:00.000Z","tags":["Report"],"updated":"2026-07-10T00:00:00.000Z","disclosureRating":5,"connectionCount":1,"content":{"markdown":"DOW-UAP-D097, Project Sign Progress Report, 1948 is a record released in PURSUE Release 04 on July 10, 2026. The Department of War released the document, an early progress report on Project Sign dated 1948. [^1][^2][^3]\n\n<PDF src=\"https://www.war.gov/medialink/ufo/071026/release_04/documents/DOW-UAP-D097_Project-Sign-Progress-Report_1948.pdf\" />\n\n## Provenance and Context\n\nThe record was obtained through official declassification channels and provided by the Department of War.[^1][^2][^3]\n\n## Detailed Content\n\nThe Air Materiel Command prepared the report as an initial progress update on Project Sign, a 1948-1949 U.S. Air Force program to investigate the nature and origin of unidentified flying objects. It details 100 UFO sightings from 1947 to 1948. The file also includes an article excerpted from \"The Aeroplane,\" an aviation periodical published between 1911 and 1968, titled \"The Biology of the Flying Saucer.\"[^3]\n\n## What the Record Supports\n\nThe report catalogs 100 sightings gathered during Project Sign's first year of operation. It does not draw a conclusion about their origin.[^3]\n\n## References\n\n[^1]: [Department of War PURSUE page](https://www.war.gov/UFO/#release)\n[^2]: [Department of War PURSUE data file (uap-data.csv)](https://www.war.gov/Portals/1/Interactive/2026/UFO/uap-data.csv)\n[^3]: [DOW-UAP-D097, Project Sign Progress Report, 1948 remote release asset](https://www.war.gov/medialink/ufo/071026/release_04/documents/DOW-UAP-D097_Project-Sign-Progress-Report_1948.pdf)","readingTime":"1 min read"},"relatedRecords":[{"ref":{"type":"updates","slug":"2026-pursue-disclosure-releases-04-05","title":"PURSUE disclosure releases 04 and 05 ingestion","url":"https://disclosdex.com/updates/2026-pursue-disclosure-releases-04-05"},"direction":"inbound","weight":1}],"citation":{"canonicalUrl":"https://disclosdex.com/documents/2026-pursue-release-04-003-dow-uap-d097-project-sign-progress-report-1948","title":"DOW-UAP-D097, Project Sign Progress Report, 1948","publisher":"Disclosdex","retrievedFrom":"https://disclosdex.com/api/v1/documents/2026-pursue-release-04-003-dow-uap-d097-project-sign-progress-report-1948","license":"CC-BY-4.0"}}