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The San Juan's Eve Squadron over Northern Argentina
June 24, 1967 · Northern Argentina (Misiones, Corrientes, Chaco, Santa Fe, Tucumán, Córdoba and Buenos Aires provinces), with Asunción, Paraguay
Argentina
UAP · Formation · 12 sources
37Partially documented
The Santa Fe Silver Disc: Venus by Daylight
January 3, 1955 · Santa Fe (de la Vera Cruz), Santa Fe Province
Argentina
UAP · Unknown · 10 sources
19Thinly 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 Gorman Dogfight
October 1, 1948 · Hector Airport, Fargo, North Dakota
United States
UAP · Orb / light · 58 sources
47Partially 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
The Mantell UFO Incident
January 7, 1948 · Godman Field, Fort Knox, to the Phillips farm near Franklin, Simpson County, Kentucky
United States
UAP · Other · 100 sources · 1 photos
50Partially documented
The Chehalis Birdman: Bernice Zaikowski's flying man
January 6, 1948 · Chehalis, Lewis County, Washington
United States
Cryptid · Creature · 13 sources
14Thinly 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
The Villa Santina Encounter: L. R. Johannis and the Red Disc of Raveo
August 14, 1947 · Chiarsò valley, lower slopes of Col Gentile, near Raveo and Villa Santina, Carnia, province of Udine, Friuli
Italy
UAP · Disc / saucer · 20 sources
13Thinly documented
Snake River Canyon Disc: The A.C. Urie Sighting
August 13, 1947 · Auger Falls Trout Farm, Snake River Canyon, near Twin Falls, Idaho
United States
UAP · Disc / saucer · 18 sources
23Thinly documented
The Kerry Priests' Rocket-Like Object
c. 1947 · Killarney district, County Kerry
Ireland
UAP · Other · 9 sources
25Thinly 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
Rhodes UFO photographs ("shoe-heel" photos), Phoenix, Arizona, 1947
July 7, 1947 · Phoenix, Arizona
United States
UAP · Disc / saucer · 33 sources · 1 photos
41Partially documented
United Air Lines Flight 105 Sighting, Emmett, Idaho
July 4, 1947 · Over Emmett, Idaho, northwest of Boise
United States
UAP · Disc / saucer · 18 sources
23Thinly documented
The Caherciveen "Doughnut" Disc
c. 1947 · Caherciveen, Iveragh Peninsula, County Kerry
Ireland
UAP · Disc / saucer · 11 sources
23Thinly documented
The Kenneth Arnold Sighting
June 24, 1947 · Near Mount Rainier and Mineral, Washington
United States
UAP · Other · 67 sources
35Partially documented
The 1947 Flying Disc Craze: America's First Flying Saucer Wave
c. 1947 · United States (nationwide, heaviest in the Pacific states: California, Washington and Oregon)
United States
UAP · Disc / saucer · 31 sources
55Partially documented
The Maury Island Incident
June 21, 1947 · East Passage of Puget Sound, off Maury Island, King County, Washington
United States
UAP · Other · 77 sources
35Partially documented
The Nicholas Roerich Expedition Sighting, Kukunor District, 1927
August 5, 1927 · Kukunor district, near the Humboldt chain (Danghe Nanshan / Ulan Daban), Qinghai
China
UAP · Egg · 35 sources
19Thinly documented
Mystery Airship Wave of 1896 and 1897
November 17, 1896 · Sacramento, California, then Northern California, the Midwest and Texas
United States
UAP · Cigar · 45 sources
41Partially documented
  • Internet Archive (FBI)· 24 pages· 10 pages mention it
    • p. 8 …CRISMAN stated that KENNETH ARNOLD wanted to obtain pictures of the place where the rock formations were obtained and that…
    • p. 20 …Thursday I received a telephone call from Tacoma from a Kenneth Arnold. The gist of this conversation was that he…
  • Central Intelligence Agency· 2013-12-18· 1 pages· 1 page mentions it
    • p. 1 …Kenneth Arnold, the Boise, Idaho, businessman who started the flying saucer spotting in 1947, displays a drawing he made of…
  • Washington State Legislature· 2017-04-18· 3 pages· 1 page mentions it
    • p. 1 …black suit; and6 WHEREAS, On June 24, 1947, pilot Kenneth Arnold alleges he saw7 nine unidentified flying objects ("UFO's…
  • Department of War· 2026-05-08· 190 pages· 9 pages mention it
    • p. 98 …Kenneth Arnold, AllIt I c_, Boiee, Idaho ------ '
    • p. 138 …Kenneth Arnold, Box 387, Boise, Ide.ho, was interviewed in regard to the report by Mr. Arnold that he saw…
  • Federal Bureau of Investigation· 190 pages· 9 pages mention it
    • p. 98 …Kenneth Arnold, AllIt I c_, Boiee, Idaho ------ '
    • p. 138 …Kenneth Arnold, Box 387, Boise, Ide.ho, was interviewed in regard to the report by Mr. Arnold that he saw…
  • Flying Saucers FOIA release
    Central Intelligence Agency· 2001-03-12· 11 pages· 1 page mentions it
    • p. 3 …The Saucer furore in this country started in June 1947 when Kenneth Arnold, a reputable business man flying his own…

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