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Pro early
Capital Airlines Flight 610 and the lighted object near Andrews AFB (Blue Book Case 1011)
November 18, 1951 · Near Andrews Air Force Base, Prince George's County, Maryland
United States
UAP · Unknown · 11 sources
27Thinly 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
The Sioux City Mystery Plane
January 20, 1951 · Sioux City municipal airport (now Sioux Gateway Airport), Sioux City, Iowa
United States
UAP · Other · 18 sources
38Partially documented
The Mariana UFO Film
August 15, 1950 · Legion Park, Great Falls, Montana
United States
UAP · Disc / saucer · 63 sources · 3 photos
55Partially documented
The RAF Tangmere Meteor Flying Saucer and the Wartling Radar Return
June 1, 1950 · Portsmouth area, Hampshire (pilot from RAF Tangmere, radar at RAF Wartling)
United Kingdom
UAP · Disc / saucer · 8 sources
42Partially documented
Pro early
TWA Flight 117 "red wheel" sighting, Goshen, Indiana
April 27, 1950 · Over Goshen toward South Bend, Indiana
United States
UAP · Disc / saucer · 10 sources
27Thinly documented
Pro early
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
Radar-Visual Sighting Over Dayton and Wright-Patterson AFB (ATIC)
March 8, 1950 · Dayton Municipal Airport, Vandalia, and Wright-Patterson AFB, Ohio
United States
UAP · Sphere · 12 sources
50Partially documented
Pro early
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
Clyde Tombaugh sighting, Las Cruces
August 20, 1949 · Las Cruces, Doña Ana County, New Mexico
United States
UAP · Formation · 19 sources
22Thinly 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 Green Fireballs over New Mexico
December 5, 1948 · Los Alamos, Sandia Base and Kirtland AFB (Albuquerque), northern and eastern New Mexico, and West Texas
United States
UAP · Orb / light · 61 sources
52Partially documented
The Chiles-Whitted Encounter
July 24, 1948 · 20 miles southwest of Montgomery, Alabama (near Hayneville, Lowndes County)
United States
UAP · Cigar · 66 sources
41Partially documented
The Twining Memo: AMC Opinion Concerning 'Flying Discs'
September 23, 1947 · Headquarters, Air Materiel Command, Wright Field, Dayton, Ohio
United States
UAP · Disc / saucer · 27 sources
28Thinly documented
Pro early
The Kerry Priests' Rocket-Like Object
c. 1947 · Killarney district, County Kerry
Ireland
UAP · Other · 9 sources
25Thinly documented
Harmon Field Disc and Cloud Hole Photographs
July 10, 1947 · Harmon Field, Stephenville, Newfoundland
Canada
UAP · Disc / saucer · 17 sources
32Partially documented
The Kenneth Arnold Sighting
June 24, 1947 · Near Mount Rainier and Mineral, Washington
United States
UAP · Other · 67 sources
35Partially documented
The Ghost Rockets (Spökraketer), Scandinavia, 1946
July 19, 1946 · Lake Kölmjärv, Överkalix, Norrbotten, Sweden (wave across Sweden, Finland, Norway and Denmark)
Sweden
UAP · Cigar · 54 sources · 3 photos
86Well documented
Pro early
Welles Bridge Falling Object Sighting, 1942
c. 1942 · Welles Bridge, Route 17 between Horseheads and Big Flats, Chemung County, New York
United States
UAP · Other · 9 sources
19Thinly documented
Pro early
The Chico Stone Falls: Rocks from a Cloudless Sky (1921-1922)
c. 1921 · J. W. Charge's grain warehouses beside the Southern Pacific tracks, near the depot at Fifth and Orange streets, Chico, Butte County, California
United States
Paranormal · Other · 13 sources
33Partially documented
  • Central Intelligence Agency· 1954-03-02· 8 pages· 4 pages mention it
    • p. 6 …The first reports came from north Jutland where the meteor was seen moving in a southwesterly direction at a very…
    • p. 7 IARGE METEOR EXPLODES -- Stockholm, Dagens Nyheter, 10 Jan 54 A large ball of fire which was seen over large parts…
  • NICAP· 1 pages· 1 page mentions it
    • p. 1 …Lewisdale, Maryland ## OBSERVER Not Reported Civilian ## Kinnecom Abnormal Refraction ## EVALUATION A/C Other (Psychological) Astro (METEOR) A/C Astro (METEOR…
  • NICAP· 3 pages· 3 pages mention it
    • p. 2 …Meteor) Astro (Meteor) Insufficient Data S)Other (Hoax) Balloon S)Other (Hoax) Insufficient Data ) Balloon (Radiosonde) ) Balloon (Radiosonde) Astro (Meteor…
    • p. 3 …Placerville, California Astro (Meteor) 135 15-20 Weaver, South Dakota AP Officer UNIDENTIFIED Birds 64 19 Twin Falls, Idaho Other…
  • Central Intelligence Agency· 1954-04-20· 4 pages· 2 pages mention it
    • p. 3 …The first reports came from north Jutland where the meteor was seen moving in a southwesterly direction at a very…
    • p. 4 LARGE METEOR EXPLODES --- Stockholm, Dagens Nyheter, 10 Jan 54 A large ball of fire which was seen over large parts…
  • MAXW-PBB2-244 Document
    Project Blue Book (hosted by NICAP)· 1 pages· 1 page mentions it
    • p. 1 …Douglass Farnaker, Abbott Culledge Jansen Leidy (PHOTOS) Astro (Meteor) Evans Astro (Meteor) Perry, Guyer Insufficient Data Hanson (PHYSICAL S) Other…
  • Central Intelligence Agency· 1954-03-04· 8 pages· 4 pages mention it
    • p. 5 …When the earth passed the same meteor swarm last year, a lone meteor was observed some days after the swarm…
    • p. 6 …When the earth passed the same meteor swarm last year, a lone meteor was observed some days after the swarm…

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