USAF · 1947 to 1969

Project Blue Book Case Files

The U.S. Air Force's 22-year investigation into reported UFO incidents, drawn from the National Archives. Each case below has a journalistic summary written from the original file. Use the search box to find a place or date, or filter by state and year.

StateOH 371 CA 274 TX 242 NY 167 FL 110 NM 92 MI 90 WA 89 IL 81 PA 78 MD 73 CO 72

Year1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969

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4 cases in IL from 1955 · page 1 of 1

Chicago, IL
1955 · unknown
In 1956, a witness in Chicago saw several unidentified flying objects while playing near a railroad near the city's northwest side. The witness got a camera, and when others in the…
Kankakee, IL
1955 · unknown
On September 23, 1955, at about 0140Z, a civilian saw an object over Kankakee, Illinois. The sighting lasted about ten minutes. The witness described one spherical object that cha…
Paris, IL
1955 · unknown
In March 1955, Eugene Metcalf of Paris, Illinois reported witnessing what he described as a jet aircraft being abducted by an unidentified flying object. According to Metcalf's acc…
Springfield, IL
1955 · unknown
On September 18, 1955, at night, a civilian saw an object near Lake Springfield in Springfield, Illinois. The witness was a 14-year-old student watching for aircraft through Ground…

Browse sightings by state

Browse sightings by year

1947 51 1948 90 1949 236 1950 167 1951 124 1952 471 1953 326 1954 350 1955 344 1956 417 1957 559 1958 359 1959 268 1960 340 1961 408 1962 346 1963 123

Chicago, IL

Kankakee, IL

Paris, IL

Springfield, IL