Case FileNARA NAID 28976378 · T1206 Roll 31
Project Blue Book Case File
Hillsboro, IllinoisJanuary 1958
Summary
Project Blue Book, the U.S. Air Force's 22-year UFO investigation program, opened a case file on a sighting reported from Hillsboro, Illinois in January 1958. The full case file (3 scanned pages of witness statements, Air Force memoranda, and investigator notes) is reproduced below as held by the National Archives. The Air Force assigned this case to its broader investigation of unidentified aerial phenomena alongside ~12,600 other reports filed between 1947 and 1969. Citation: NARA Record Group 341, Microfilm Publication T1206, Roll 31.
Reported location
Hillsboro, Illinois
Date of incident
January 1958
State / country
IL / US
Page count
3 scanned pages
USAF evaluation
unknown
Microfilm
T1206, Roll 31