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The Unsmiling Men of Ranton: Jessie Roestenburg's Saucer at Vicarage Farm
October 21, 1954 · Vicarage Farm, Ranton, near Stafford, Staffordshire
United Kingdom
UAP · Disc / saucer · 17 sources
13Thinly documented
Project Magnet's Shirley's Bay Detection Station: The Gravimeter Reading of August 8, 1954
August 8, 1954 · Shirley's Bay, Ottawa River, west of Ottawa, Ontario
Canada
UAP · Unknown · 30 sources
32Partially documented
The Drury Film: A Silver Dart over Port Moresby
August 23, 1953 · Port Moresby, Territory of Papua and New Guinea
Papua New Guinea
UAP · Cylinder · 17 sources · 1 photos
34Partially documented
The Martian Monkey Hoax on the Bankhead Highway
July 8, 1953 · Bankhead Highway (now Veterans Memorial Highway, US 78), Leland area of Mableton, Cobb County, Georgia
United States
UAP · Being / humanoid · 27 sources · 3 photos
36Partially documented
B-29 radar-visual encounter over the Gulf of Mexico (Karas, Naumann / "Harter and Coleman")
December 6, 1952 · Gulf of Mexico, about 100 miles south of the Louisiana coast, about 190 miles from Galveston, Texas
United States
UAP · Other · 23 sources
47Partially documented
The Flatwoods Monster
September 12, 1952 · G. Bailey Fisher farm, Flatwoods, Braxton County, West Virginia
United States
Cryptid · Creature · 68 sources
46Partially documented
Yaak Air Force Station radar-visual sightings
September 1, 1952 · Yaak Air Force Station, Hensley Hill, Lincoln County, Montana
United States
UAP · Cigar · 12 sources
40Partially documented
Project Second Storey, Canada's Interdepartmental UFO Committee
April 22, 1952 · Ottawa, Ontario
Canada
UAP · Disc / saucer · 21 sources
40Partially documented
The Puerto Maldonado "Smoking Saucer" Photograph
July 19, 1951 · Puerto Maldonado and Iberia, Madre de Dios, Peru
Peru
UAP · Cigar · 14 sources · 2 photos
34Partially documented
The New Delhi Flying Club Cigar
March 15, 1951 · Delhi Flying Club hangar, Safdarjung Aerodrome, New Delhi
India
UAP · Cigar · 17 sources
32Partially documented
The Mount Kilimanjaro Sighting from an East African Airways Lodestar
February 19, 1951 · Above Mount Kilimanjaro, Tanganyika (now Tanzania), seen from a Lodestar over southern Kenya
Tanzania
UAP · Cigar · 14 sources
29Thinly documented
The Bethune Encounter: US Navy Flight 125 off Newfoundland
February 10, 1951 · North Atlantic, about 200 miles northeast of Argentia, Newfoundland (the 'Gander' case)
Canada
UAP · Disc / saucer · 24 sources
33Partially documented
Chicago & Southern Airlines DC-3 porthole disc, Hazen, Arkansas
March 20, 1950 · Near Hazen, Prairie County, Arkansas, about 40 miles east of Little Rock, north of Stuttgart
United States
UAP · Disc / saucer · 19 sources
20Thinly documented
Kodiak Naval Radar-Visual Encounters: P2V-3 Patrol Plane and USS Tillamook
January 22, 1950 · Naval Air Station Kodiak, Kodiak, Alaska
United States
UAP · Other · 18 sources
51Partially documented
Mount Palomar Observatory Sightings and Cosmic-Ray Counter Anomalies
October 14, 1949 · Palomar Observatory, Palomar Mountain, San Diego County, California
United States
UAP · Formation · 18 sources
36Partially documented
The Charles B. Moore Theodolite Sighting, Arrey, New Mexico
April 24, 1949 · Launch site about 3 miles north of Arrey, Sierra County, New Mexico
United States
UAP · Egg · 26 sources
35Partially documented
The "Two Pullman Cars" Object of Cortez Road: Captain Sames of Eglin AFB
January 27, 1949 · Cortez Road between Bradenton and Cortez, Manatee County, Florida
United States
UAP · Cigar · 11 sources
18Thinly documented
The St. Louis and Alton Giant Bird Flap (Thunderbird Sightings), 1948
April 1948 · Alton, Illinois, and greater St. Louis, Missouri, with a separate cluster around Caledonia and Freeport, northern Illinois
United States
Cryptid · Creature · 14 sources
28Thinly documented
Twin Falls saucer hoax
July 11, 1947 · T. H. Thompson residence, Twin Falls, Twin Falls County, Idaho
United States
UAP · Disc / saucer · 17 sources · 1 photos
28Thinly documented
Muroc Army Air Field disc sightings
July 8, 1947 · Muroc Army Air Field and Rogers Dry Lake, Kern County, California
United States
UAP · Disc / saucer · 25 sources
40Partially documented
  • Central Intelligence Agency· 1953-11-04· 4 pages· 3 pages mention it
    • p. 1 …The project has been confined to maintaining awareness of the activities of other agencies (notably the USAF) in the unidentified…
    • p. 2 …The project has been confined to maintaining awareness of the activities of other agencies (notably the USAF) in the unidentified…
  • The Black Vault· 64 pages· 34 pages mention it
    • p. 15 …However, in an interview with an employee of Project SIGN, the employee claimed the project started a year earlier, in…
    • p. 16 15 Project GRUDGE (Original Organization) (February–December 1949) Background: Project SIGN was renamed Project GRUDGE in approximately February 1949. The…
  • Department of Defense. Office of the Secretary of Defense.· 2023· 63 pages· 34 pages mention it
    • p. 14 …However, in an interview with an employee of Project SIGN, the employee claimed the project started a year earlier, in…
    • p. 15 15 Project GRUDGE (Original Organization) (February–December 1949) Background: Project SIGN was renamed Project GRUDGE in approximately February 1949. The…
  • Office of the Secretary of Defense· 63 pages· 34 pages mention it
    • p. 14 …However, in an interview with an employee of Project SIGN, the employee claimed the project started a year earlier, in…
    • p. 15 15 Project GRUDGE (Original Organization) (February–December 1949) Background: Project SIGN was renamed Project GRUDGE in approximately February 1949. The…
  • All-domain Anomaly Resolution Office· 2024-03· 63 pages· 34 pages mention it
    • p. 14 …However, in an interview with an employee of Project SIGN, the employee claimed the project started a year earlier, in…
    • p. 15 15 Project GRUDGE (Original Organization) (February–December 1949) Background: Project SIGN was renamed Project GRUDGE in approximately February 1949. The…
  • All-domain Anomaly Resolution Office· 2024-03-08· 63 pages· 34 pages mention it
    • p. 14 …However, in an interview with an employee of Project SIGN, the employee claimed the project started a year earlier, in…
    • p. 15 15 Project GRUDGE (Original Organization) (February–December 1949) Background: Project SIGN was renamed Project GRUDGE in approximately February 1949. The…

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