1940s: declassified UAP incidents — timeline.
12 UAP cases
The 1940s account for 12 UAP cases in this archive — 12 documents — released by Department of Energy, Department of War, and FBI under the PURSUE program. Reported locations from the decade include New Mexico, Virginia, and Various, among others; some incidents carry no usable location and are excluded from the map. Every year below links to the cases reported in it, and years with enough declassified material get their own dedicated timeline page, linked from the heading. Use the interactive map to see where these incidents cluster, or the knowledge graph to follow a witness, mission or aircraft type across the rest of the archive.
1949 — 3 UAP cases
DOE-UAP-D004, Los Alamos Conference on Aerial Phenomena, 1949
This document is a declassified transcript of a March 1949 U.S. Atomic Energy Commission memorandum forwarding minutes of a conference on "Aerial Phenomena" held 16 February 1949 at Los Alamos Scientific Laboratory. Convened amid a wave of
DOW-UAP-D094, Analysis of Flying Object Incidents in the United States, 1949
This is Air Intelligence Report No. 100-203-79 / Air Intelligence Division Study No. 203, titled "Analysis of Flying Object Incidents in the U.S.," dated 10 December 1948 and jointly issued by the Directorate of Intelligence, Headquarters U
FBI-UAP-D011, D/FBI Correspondence Referral, 1949
FBI-UAP-D011 is a 4-page piece of FBI correspondence from 1949 (declassified under a 2007 classification guide reference visible on page 1). It centers on a letter dated January 31, 1949, from Rev. Charles C. Barnes, Pastor of a Presbyteria
1948 — 5 UAP cases
DOW-UAP-D093, Analysis of Flying Object Incidents in the United States, 1948
This is a declassified 10 December 1948 U.S. Air Force study, "Analysis of Flying Object Incidents in the United States" (Study No. 203), produced by the Air Intelligence Division under Project Sign. It analyzes approximately 240 reported s
DOW-UAP-D097, Project Sign Progress Report, 1948
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
DOW-UAP-D017, UAP Reported at Sandia Base, 1948-1950
This is a substantial (116-page) collection of official 1948-1950 U.S. Air Force correspondence and reports concerning the famous 'green fireball' phenomena observed in the New Mexico area near Los Alamos, Sandia Base, and Kirtland Air Forc
18_6369445_General_1948_Vol_1
This file contains memorandums, correspondence, and forms related to the reporting of information on flying discs and investigations into sightings.
341_110448_Records_Relating_to_the_Collection_and_Dissemination_of_Intelligence_1948-1955-TS_CONT_No.2_2-5300-2-5399
This is a declassified U.S. Air Force intelligence file dated 8 November 1948, part of a Top Secret continuation series (No. 2, 2-5300 to 2-5399) titled "Records Relating to the Collection and Dissemination of Intelligence, 1948-1955." It w
1947 — 3 UAP cases
DOW-UAP-D099, Intelligence Review of “Ghost Rocket” Incidents, 1947
An 8-page Secret intelligence review, "Ghost Rockets over Scandinavia," published 20 January 1947 by the Intelligence Division, War Department General Staff, Washington, D.C. (Copy No. 597), as part of a periodic intelligence digest. The re
DOW-UAP-D100, Air Materiel Command Report on Unidentified Flying Objects, 1947-1948
A 245-page dossier of Air Materiel Command / Directorate of Intelligence correspondence on the Air Force's 1947-1948 "flying disc" investigation (later Project SIGN); 239 pages are legible, with 6 blank or redacted and one further page cut
18_100754_ General 1946-7_Vol_2
This file contains memorandums and correspondence related to flying disc/saucer sightings and that those are a matter of concern for the Air Materiel Command.
1945 — 1 UAP case
331_120752_Numeric_Files_1944–1945_37153_German_Armament_Equipment_Documents
This document, titled 'Numeric Files 1944-1945, 37153, German Armament Equipment Documents' (17 pages), appears to be a scanned WWII-era U.S. military intelligence file (National Archives-style numeric file series 331/120752) related to cap