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.
81 cases in IL · page 1 of 2
Chicago, IL
1963 · unidentifiedOn January 30, 1963, a 12 year old civilian in Chicago, Illinois, reported a black rectangular object with a bright light in front of it. The object was about the size of a basketb…
Chicago, IL
1963 · unidentifiedIn June 1963, a young observer in Chicago watched the moon through a telescope and saw something unexpected: approximately twenty or more small dots crossing in front of the moon.…
Evanston, IL
1963 · unidentifiedOn the evening of May 15, 1963, in Evanston, Illinois, a witness observed a solid object with lights accompanied by a low humming sound. The object appeared directly overhead and w…
Glen Ellyn, IL
1963 · unidentifiedOn the evening of July 1, 1963, a resident of Glen Ellyn, Illinois observed an unusual object moving across the night sky. Using a theodolite (a surveying instrument that measures…
Joliet, IL
1963 · unidentifiedIn April 1963, a resident of Joliet, Illinois reported seeing an object in the night sky that he described as breaking apart into seven separate pieces and performing various maneu…
Lincolnwood, IL
1963 · unidentifiedOn June 17, 1963, a civilian witness in Lincolnwood, Illinois reported seeing a silver disc-shaped object with no tail at 12:25 p.m. The witness was waiting for a bus at the southw…
Skokie, IL
1963 · unidentifiedOn June 8, 1963, at about 9:30 p.m., a witness saw a bright object on the Edens Highway between Skokie and Highland Park, Illinois. The observer was a civilian, an 11-year-old who…
30 N of Kankakee, IL
1962 · unidentifiedOn July 11, 1962, five people about 30 miles north of Kankakee, Illinois, on U.S. 54 reported objects at about 2020 (8:20 p.m.). The objects were in sight for about 15 minutes. Th…
Arlington Heights, IL
1962 · unidentifiedOn the night of September 25, 1962, military police officers stationed near Arlington Heights, Illinois saw something that puzzled them. The witnesses described a large, saucer-sha…
Chanute AFB, IL
1962 · unidentifiedOn March 19, 1962, several witnesses at Chanute Air Force Base, Illinois, reported one object in the west-northwest sky. The object was orange and about one fifth the size of the m…
Chicago, IL
1962 · unidentifiedOn October 10, 1962, at 11:03 p.m., a civilian in Chicago, Illinois reported an illuminated object with the appearance of a star in flight moving from west to east. The sighting la…
Chicago, IL
1962 · unidentifiedOn the night of April 25, 1962, a civilian observer in Chicago used a telescope to spot a bright, glowing object moving across the sky. The observer described the object as white a…
Chicago, IL
1962 · unidentifiedOn August 21, 1962, several people in Chicago, Illinois, reported an object in the night sky. The time was about 0410Z. A housewife was the main observer, and four other people, in…
Des Plaines, IL
1962 · unidentifiedOn October 4, 1962, a housewife in Des Plaines, Illinois, reported a sighting at night. The time was about 0730Z. The witness did not actually see an object. The woman said a wind…
Evanston, IL
1962 · unidentifiedOn the evening of July 14, 1962, someone in Evanston, Illinois reported seeing an unusual object in the sky that resembled a large commercial airliner with multiple bright yellow l…
Maywood, IL
1962 · unidentifiedOn an August night in 1962 in Maywood, Illinois, a witness watched a bright yellow object moving slowly across the sky, passing behind clouds as it traveled from west to southwest.…
Naperville, IL
1962 · unidentifiedIn March 1962, two women driving near Naperville, Illinois, spotted mysterious red blinking lights in the evening sky. The women, returning from a card game, watched the strange ob…
Bartlett, IL
1961 · unknownOn a December evening in 1961, a witness in Bartlett, Illinois saw an unusual object in the sky as the sun was setting. The witness described it as an elongated, cloud-like shape t…
Bloomington, IL
1961 · unknownOn June 18, 1961, in Bloomington, Illinois, a civilian reported observing a shiny round star-like object in the early evening. The witness was lying on grass near a swimming pool w…
Chanute AFB, IL
1961 · unknownOn the evening of March 9, 1961, five military members at Chanute Air Force Base in Illinois reported seeing an unusual bright object in the sky. The witnesses described it as roun…
Chicago, IL
1961 · unknownOn December 13, 1961, in Chicago, Illinois, a civilian observer reported seeing an orange to bright white sphere about half the size of the moon. The object was observed from the g…
Chicago, IL
1961 · unknownA woman in Chicago reported seeing an unusual object in the sky in September 1961. She described it as medium dark in color, tan or cocoa colored, and about the size of a car. She…
E of Monticello, IL
1961 · unknown# Summary Three people driving west on a highway near Monticello, Illinois, in July 1961 saw lights in the sky that appeared to keep pace with their car. The observers reported se…
Hanna City AFS, IL
1961 · unknownOn April 21, 1961, radar operators at Hanna City Air Force Station, Illinois, tracked an object about 2 miles west of Hanna City. The radar contact lasted about 3 hours and 4 minut…
Mackinaw, IL
1961 · unknownOn the night of November 20, 1961, two men plowing a field near Mackinaw, Illinois noticed a bright white light in the southwest sky. The men were jet engine mechanics attached to…
Scott AFB, IL
1961 · unknownOn November 5, 1961, a military witness at Scott Air Force Base, Illinois, reported an object at about 1:07 a.m. local time. The source was a special agent judged reliable. The obj…
23 mi S Of Joliet, IL
1960 · unidentifiedOn May 31, 1960, observers near Braidwood and Joliet, Illinois spotted a bright object in the night sky. The main witness, a local official with strong credibility, watched a brill…
Arlington Heights, IL
1960 · unidentifiedOn December 25, 1960, a civilian in Arlington Heights, Illinois reported seeing an unidentified object at 5:15 p.m. local time. The object was oval to round in shape, approximately…
Champaign, IL
1960 · unidentifiedOn September 22, 1960, two young civilians near Champaign, Illinois, reported an object northwest of the city at about 0007 (just after midnight, local). They described a yellowish…
Champaign, IL
1960 · unidentifiedOn June 7, 1960, a photographer in Champaign, Illinois filmed what turned out to be one of Project Blue Book's more unusual cases: an unidentified bright object that moved across t…
Chanute AFB, IL
1960 · unidentifiedOn the morning of July 2, 1960, multiple witnesses at Chanute Air Force Base in Illinois reported seeing unusual lights in the sky over a five-hour span. The first two observers, a…
Chanute AFB, IL
1960 · unidentifiedOn the night of July 27, 1960, an airman stationed at Chanute Air Force Base in Illinois saw something bright and unusual cross the sky. Airman Stelle, a weather observer, was on d…
Chicago, IL
1960 · unidentifiedOn April 6, 1960, an airman stationed near Chicago wrote to the U.S. Air Force to report that he had witnessed what he believed was the disintegration of the Soviet satellite Sputn…
Crete, IL
1960 · unidentifiedOn August 29, 1960, a man driving north on Illinois Route 1 near Crete, Illinois saw a gleaming, chrome-colored object hovering just above the ground. He watched it through his car…
Decatur, IL
1960 · unidentified# A Persistent Quest for Evidence in Decatur, Illinois In May 1960, Dorothy A. Hott, a resident of Decatur, Illinois, reported that she had repeatedly observed what she described…
Essex, IL
1960 · unidentifiedIn August 1960, residents of Essex, Illinois found multiple foil strips on the ground. A civilian reported the discovery and sent samples to Chanute Air Force Base for identificati…
Glenview, IL
1960 · unidentifiedOn August 31, 1960, a civilian woman reported a flying object to the Navy at Glenview, Illinois, at about 11:30 p.m. local time. The object was cylindrical and illuminated. It was…
Gurnee, IL
1960 · unidentifiedOn the night of September 1960, a resident of Gurnee, Illinois watched what he described as a bright, star-like object moving across the sky. The object appeared on the horizon at…
Urbana, IL
1960 · unidentifiedOn September 28, 1960, a civilian on the University of Illinois campus in Urbana, Illinois, reported an object at 0120 (about 8:20 p.m. local), at night. The graduate student saw a…
Vicinity Monticello, IL
1960 · unidentifiedOn the evening of July 26, 1960, Mrs. Ennis, a housewife, was riding in a car driven by her husband on Highway 47 near Monticello, Illinois. It was around dusk. Her seven-year-old…
Chicago, IL
1959 · unknownOn July 9, 1959, a civilian in Chicago, Illinois reported seeing a round, orange object about the size of a pinhead. The object was observed from a ground location at approximately…
Mooseheart, IL
1959 · unknownOn a July evening in 1959, members of a group at Mooseheart, Illinois saw a silvery disc-shaped object in the sky to the south, in the general direction of Aurora. The sighting occ…
Park Ridge, IL
1958 · unknownOn August 26, 1958, a civilian and his wife in the Park Ridge, Illinois, area (home in Tinley Park, Illinois) reported an unidentified flying object between 9:58 and 10:05 p.m. The…
Peoria, IL
1958 · unknownOn January 12, 1958, two women returning home from church near Sterling Avenue and Albany Avenue in Peoria, Illinois, spotted an unusual object hovering above electric light poles…
River Forest, IL
1958 · unknownIn early January 1958, in River Forest, Illinois, a civilian woman reported filming an object on 8mm movie film. She was in her backyard around 1:00 to 1:30 a.m. taking pictures of…
Rushville, IL
1958 · unknownOn January 2, 1958, a civilian in Rushville, Illinois reported seeing one unidentified object at 1:33 a.m. The object was described as red and circular with no tail or exhaust, ver…
15-20 Mi W of Jolliet, IL
1957 · unknownOn November 26, 1957, at 0630 hours (6:30 a.m. CST), a 31-year-old former Air Force pilot who was then a captain in the Indiana Air National Guard saw an unidentified object while…
Grayville, IL
1957 · unknownIn September 1957, near Grayville, Illinois, a witness saw one object with vapor trails. The object moved from north to south, then to the west. It was in sight for about 20 minute…
Makanda, IL
1957 · unknownOn November 9, 1957, at 10:01 a.m., a civilian in Makanda, Illinois reported seeing one round object colored red to blue, very high in the sky. The object had no tail or exhaust an…
O'Fallon, IL
1957 · unknownOn December 5, 1957, observers near O'Fallon, Illinois reported a fast, fiery object. The report describes a bullet-shaped or pencil-shaped object, fiery yellow and blue-white, wit…
Waverly, IL
1957 · unknownOn November 8, 1957, at 12:01 a.m. in Waverly, Illinois, a civilian witness reported seeing an object larger than an airplane with white and green coloring. The object had fuzzy or…
20 miles SW of Chanute AFB, IL
1956 · unknownOn January 9, 1956, a light was seen about 20 miles southwest of Chanute Air Force Base, Illinois. The Greenwich time was 0120Z on January 10. The sighting was made from the air at…
Chicago, IL
1956 · unknownOn March 14, 1956, in Chicago, Illinois, a civilian and military observer reported a sighting. A round object of unknown size and white color was seen at an unknown altitude. The o…
Chicago, IL
1956 · unknownOn August 1, 1956, in Chicago, Illinois, a civilian witness reported seeing a round, very large white object. The object was stationary and still in sight at the time of report. It…
East Danville, IL
1956 · unknownOn August 1, 1956, at 12:06 a.m. local time, a civilian housewife in East Danville, Illinois reported seeing a bright glowing object with a red hue. The object was described as bas…
Fox River Grove, IL
1956 · unknownOn the evening of November 16, 1956, a 14-year-old boy in Fox River Grove, Illinois reported seeing an unusual object in the sky. The boy watched for 73 minutes as the object chang…
Plano, IL
1956 · unknownOn October 19, 1956, a civilian in Plano, Illinois reported a ground visual sighting of one round, red, orange, and green object about the size of a baseball at arm's length. The o…
Wheaton, IL
1956 · unknownOn May 20, 1956, in Wheaton, Illinois, a civilian reported one object. It was a ground visual sighting at about 9:50 p.m. local time. The witness watched it for about 23 minutes wi…
Chicago, IL
1955 · unknownIn 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 · unknownOn 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…
Browse sightings by state
Browse sightings by year