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Monon Railroad Freight No. 91 Encounter (Wasco to Kirklin, Indiana)
October 3, 1958 · Monon Railroad line between Wasco, Frankfort and Kirklin, Clinton County, Indiana
United States
UAP · Disc / saucer · 27 sources
22Thinly documented
Tamaroa Hovering UFO and Power Failure
November 14, 1957 · Tamaroa, Perry County, Illinois
United States
UAP · Unknown · 15 sources
12Thinly documented
The Danville State Trooper Chase and Radio Failure (1957)
November 6, 1957 · Danville, Vermilion County, Illinois (north on Route 1, then west to Oakwood and south on Sugar Creek Road toward Fairmount)
United States
UAP · Orb / light · 12 sources
25Thinly documented
USCGC Sebago radar-visual sighting, Gulf of Mexico
November 5, 1957 · Gulf of Mexico, about 200 miles south of the Mississippi delta
International waters
UAP · Unknown · 11 sources
41Partially documented
The Nawaca Fishermen Encounter (Nabouwalu, Fiji)
October 8, 1957 · Coastal waters between Nabouwalu and Nawaca, Bua Province, Vanua Levu
Fiji
UAP · Disc / saucer · 11 sources
19Thinly documented
Agrinio truck engine failure under a glowing object
c. 1955 · Mountain road near Agrinio (Agrinion), Aetolia-Acarnania, western Greece
Greece
UAP · Unknown · 11 sources
15Thinly documented
The BEA "Two Saucers Rim-to-Rim" Sighting over the English Channel
October 9, 1953 · English Channel, on the London Airport (Heathrow) to Paris Orly route
International waters
UAP · Disc / saucer · 6 sources
24Thinly documented
F-94 and Ground Radar Sighting at Nemuro, Hokkaido, 1953
February 7, 1953 · Nemuro AF Detachment, Nemuro, Hokkaido (also listed as "Korean area" and "Okinawa")
Japan
UAP · Unknown · 12 sources
40Partially 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
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
William Squyres and the Propeller-Rimmed Disc, Pittsburg, Kansas
August 25, 1952 · Yale road, about 200 yards north of US Highway 160, northeast of Frontenac, near Pittsburg, Crawford County, Kansas
United States
UAP · Disc / saucer · 9 sources
24Thinly documented
Davis-Monthan AFB: Two Discs Pace a B-36 (The Case of the Missing Report)
May 1, 1952 · Davis-Monthan AFB, Tucson, Pima County, Arizona
United States
UAP · Disc / saucer · 19 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
Seymour Hess sighting at Lowell Observatory, Flagstaff, 1950
May 20, 1950 · Lowell Observatory, Mars Hill, Flagstaff, Coconino County, Arizona
United States
UAP · Sphere · 15 sources
21Thinly documented
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
The USS Supply "Remarkable Meteors"
February 28, 1904 · Pacific Ocean, about 300 miles WSW of San Francisco (36°20′ N, 127°36′ W)
International waters
UAP · Formation · 16 sources
22Thinly documented
  • NASA / DoD FOIA reading room· 1978· 7 pages· 4 pages mention it
    • p. 2 …should do in the area of UFO research. There is an absence of tangible or physical evidence available for thorough…
    • p. 4 …from investigating UFO repo~ts since 1948, the conclusions of the Air Force were: (1) no UFO reported, investi- gated…
  • Central Intelligence Agency· 1953-01-21· 3 pages· 2 pages mention it
    • p. 1 …No evidence is available to indicate any physical threat to the security of the United States. 2. No evidence is…
    • p. 2 …No evidence is available to indicate any physical threat to the security of the United States. 2. No evidence is…
  • Central Intelligence Agency· 1953-01-03· 3 pages· 2 pages mention it
    • p. 1 …No evidence is available to indicate any physical threat to the security of the United States. 2. No evidence is…
    • p. 2 …No evidence is available to indicate any physical threat to the security of the United States. 2. No evidence is…
  • Central Intelligence Agency· 2001-04-30· 5 pages· 4 pages mention it
    • p. 4 …for the thirteen years of UFO sightings involving over 6,500 reports are: first, there is no evidence that unidentified…
    • p. 5 …If an UFO report is classified it is classified for other reasons than the UFO sighting itself. The Air Force…
  • Central Intelligence Agency· 2001-03-20· 2 pages

    …The Panel has received the evidence as presented by cognizant Governmental agencies, primarily the United States Air Force…

  • 2d af 1 FOIA release
    Office of the Secretary of Defense· 3 pages· 1 page mentions it
    • p. 2 …The decision to discontinue UFO investigations was based on an evaluation or a report prepared by the Univarsity of Colorado…

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