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Col. Remy Van Lierde's giant snake (the Congo snake or Katanga snake)
August 1959 · About 100 km north-north-west of Kamina Air Base, Katanga, Belgian Congo
Democratic Republic of the Congo
Cryptid · Creature · 31 sources · 6 photos
33Partially documented
Alor Islands humanoid encounters
July 1959 · Alor and Pantar islands, near Kalabahi, East Nusa Tenggara
Indonesia
UAP · Being / humanoid · 24 sources
20Thinly documented
The Back Seat Ghost: Mabel Chinnery's Photograph, Ipswich
March 22, 1959 · Old Ipswich Cemetery, Ipswich, Suffolk, England
United Kingdom
Paranormal · Being / humanoid · 17 sources · 4 photos
28Thinly documented
The Gerry Irwin Case: the Soldier and the Light over Cedar City
February 28, 1959 · Utah State Route 14, about six miles southeast of Cedar City, Iron County, Utah
United States
UAP · Unknown · 25 sources
26Thinly documented
The Killian Case: American Airlines Flight 139 Paced by Three Lights
February 24, 1959 · About 13 miles west of Williamsport, Pennsylvania (airliner route toward Ohio)
United States
UAP · Formation · 17 sources
41Partially documented
The Ohio River Monster, later called Octo-Man (Cincinnati area, 1959)
January 29, 1959 · Ohio River near Cincinnati: New Richmond and Kellogg Avenue, Ohio; Licking River bridge and Fort Thomas, Kentucky
United States
Cryptid · Creature · 14 sources
17Thinly documented
Charles Wetzel's "Riverside Monster"
November 8, 1958 · North Main Street crossing of the Santa Ana River, Riverside, California
United States
Cryptid · Creature · 23 sources
23Thinly documented
The Turzovka apparitions: Matúš Lašut's visions on Živčáková hill and the communist crackdown
June 1, 1958 · Živčáková hill (Pri Obraze), above Turzovka, Kysuce, Žilina Region
Slovakia
Paranormal · Being / humanoid · 32 sources
30Partially documented
The Bouahmama Legionnaire Sighting: An Emerald Beam Over the Algerian War
March 1958 · Bouahmama (Bouhmama), Sud Constantinois, south of Constantine
Algeria
UAP · Disc / saucer · 16 sources
9Thinly 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
Fort Itaipu incident: the burned sentries
November 4, 1957 · Fortaleza de Itaipu, Ponta de Itaipu, Praia Grande, São Paulo
Brazil
UAP · Disc / saucer · 25 sources
18Thinly documented
The Elmwood Park Police "Hide-and-Seek" Object
November 4, 1957 · Elmwood Park, Cook County, Illinois (chase ending near Elmwood Cemetery, River Grove)
United States
UAP · Cigar · 11 sources
16Thinly documented
White Sands Proving Ground Army patrol sightings near Trinity Site (1957)
November 3, 1957 · Trinity Site bunkers, northern range of White Sands Proving Ground, near Stallion Site, New Mexico
United States
UAP · Egg · 16 sources
29Thinly documented
The Silpho Moor Flying Saucer, Scarborough 1957
c. 1957 · Silpho Moor, near Reasty Bank and Broxa Forest, north-west of Scarborough, North Yorkshire, England
United Kingdom
UAP · Disc / saucer · 22 sources · 1 photos
40Partially documented
The Antônio Villas Boas Abduction
October 15, 1957 · Villas Boas family farm near São Francisco de Sales, Minas Gerais
Brazil
UAP · Egg · 64 sources
25Thinly documented
The Kersey time-slip: three naval cadets walk into a silent medieval village (1957)
October 1957 · Kersey, Babergh district, Suffolk
United Kingdom
Paranormal · Other · 32 sources
18Thinly documented
The Lergravsviken "bicycle-bell" discs (the Åkerberg sighting), Gotland
August 5, 1957 · Lergravsviken, near Fårösund, Rute parish, Gotland
Sweden
UAP · Disc / saucer · 12 sources
20Thinly documented
A. G. Pronin's Snowman on the Fedchenko Glacier, Pamirs (1957)
August 1957 · Balyandkiik River valley, Fedchenko Glacier, Pamir Mountains, Gorno-Badakhshan
Tajikistan
Cryptid · Creature · 24 sources
28Thinly documented
Marfa Lights, Mitchell Flat and Paisano Pass, Texas
July 1957 · Mitchell Flat, between Marfa and Paisano Pass, Presidio County, Texas
United States
UAP · Orb / light · 22 sources · 2 photos
35Partially documented
  • Central Intelligence Agency· 1958-03-04· 2 pages· 2 pages mention it
    • p. 1 …I have had the records of this Agency checked and find nothing therein notifying that any UIA employee, at any…
    • p. 2 …I have had the recent of this Agency checked and I did nothing therein reflecting that any UIA employee, at…
  • Central Intelligence Agency· 1992-02-11· 2 pages· 2 pages mention it
    • p. 1 …THE AIR FORCE PROMPTLY SCRAMBLED 18 FIGHTER PLANES, A RESCUE HELICOPTER AND A C-130 TRANSPORT, BUT THEY FOUND NOTHING…
    • p. 2 …OBJECT WAS LAST DETECTED ON RADAR, BUT SO FAR NOTHING HAS BEEN FOUND," HE SAID. ADMIN (ENDALL) 110749 1126 11…
  • Central Intelligence Agency· 1958-04-17· 1 pages· 1 page mentions it
    • p. 1 …had the recent of this Agency checked and find nothing therein reflecting that any TIA employee, at any time, control…
  • Central Intelligence Agency· 1955-09-04· 3 pages· 3 pages mention it
    • p. 1 …They turned out the lights and looked out the window but instinctively saw nothing and the rest of the party…
    • p. 2 …They turned out the lights and looked out the window but initially saw nothing and the rest of the party…
  • Central Intelligence Agency· 1955-09-04· 2 pages· 2 pages mention it
    • p. 1 …involved in the "Flying Saucer" event, there still appears nothing to confirm the existence of these or other particularly unconventional…
    • p. 2 …Interview with After interviews with three of the four observers involved in the "Flying Saucer" event, there still appears nothing…
  • Flying Saucers FOIA release
    Central Intelligence Agency· 1957-06-03· 2 pages· 2 pages mention it
    • p. 1 …He feel that we have nothing to gain in further follow-up in this matter and I am passing the…
    • p. 2 …We feel that we have nothing to gain in further follow-up in this matter and I am passing the…

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