DOW-UAP-D097
Project Sign Progress Report, 1948
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Preview description (machine-generated): A black and white photograph of a large, delta-winged aircraft prototype resting on the ground, marked as confidential.
Official description
This file contains an initial report from the Air Materiel Command regarding Project Sign. Project Sign was a 1948-1949 U.S. Air Force program to investigate the nature and origin of unidentified flying objects (UFO). The report details 100 UFO sightings from 1947-1948. The file also contains an article excerpted from “The Aeroplane,” an aviation-focused periodical magazine published between 1911 and 1968, titled “The Biology of the Flying Saucer.”
Reproduced verbatim from the releasing agency.
AI summary
This file consists of a progress report from the Air Materiel Command regarding Project Sign, a U.S. Air Force initiative from 1948-1949 aimed at investigating unidentified flying objects (UFOs). It includes documentation of 100 UFO sightings from 1947-1948, as well as an article from an aviation magazine discussing aspects of flying saucers.
Cite this page
Department of War, “DOW-UAP-D097: Project Sign Progress Report, 1948,” released Jul 10, 2026. PURSUE Files, catalogued by Fringe Index: https://fringeindex.com/documentdump/dow-uap-d097-project-sign-progress-report-1948. Original: https://www.war.gov/medialink/ufo/071026/release_04/documents/DOW-UAP-D097_Project-Sign-Progress-Report_1948.pdf