UFO sightings in Sioux City, Iowa: Air Force files

12 US Air Force Project Blue Book case files name Sioux City. The files run from 1950 to 1967. The busiest year was 1963, with 2 files. Most were filed in March.

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Files by year

0’47

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1’50

1’51

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1’54

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1’56

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0’60

1’61

0’62

2’63

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2’65

1’66

2’67

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0’69

Every file from Sioux City

Each link opens the original scanned folder at the US National Archives (Record Group 341). Blue Book closed in 1969, so there are no files after that year.

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UFO sightings in Sioux City, Iowa: Air Force files

Files by year

Every file from Sioux City

1950 1 file

1951 1 file

1954 1 file

1956 1 file

1961 1 file

1963 2 files

1965 2 files

1966 1 file

1967 2 files