Sighting in 4 Mi. N Of Alton, April 1948
Illinois, United States
Sighting reported in April 1948 (4 Mi. N Of Alton, Illinois, United States) and investigated by Project Blue Book, the US Air Force UFO investigation (1947-1969). The Air Force's conclusion is in the digitised case file held by the US National Archives.
The original file is a set of scanned documents (reports, sketches, correspondence) that has not been transcribed yet. You can browse it page by page through the source link.
- Date
- April 1948
- Location
- 4 Mi. N Of Alton · town centre
- Type of sighting
- From the ground
Sources
- See the original document
Project Blue Book (NARA)
n° 28930712
Summary written by SkyUnknown from the facts published by the source.