Skip to content
Anomaly GraphCONNECT THE UNEXPLAINED
Start investigating
← Research library

Archive case record

Chicago Illinois, April 1951

Date of account
1951-04
Location
Chicago Illinois
Source
uap_archive
Record updated
2026-10-10

View the original source ↗

Record summary

Project Blue Book case file indexed from National Archives metadata; page-level review pending.

Published source text

Read the available text below. Archive transcriptions may contain OCR errors; later context is labelled separately. A recorded claim is not a finding that it happened.

Source page 1

Source text · mention only

PROJECT 10073 RECORD CARD 1.DATE 2.LOCATION 12.CONCLUSIONS 26 Apr 51 Chicago Illinois 口 Was Balloon 口 Probably Bolloon 口 Possibly Balloon 3.DATE-TIME GROUP 4.TYPEOF OBSERVATION 只 XGround-Visual Ground-Radar Was Aircraft Local 口 ProboblyAircraft 26/23252 Ai~Visual D Air-Intercopt Rador 口 Possibly Aircraft GMT. 5. PHOTOS 6.SOURCE 口 Was Astrcnomicol OYos 口 ProbablyAstroromical No Civilian 口 PossiblyAstronomical 7.LENGTH OF OBSERVATION NUMBER OF OBJECTSI9. COURSE 口 Other 口 InsufficientDoto forEvaluotion 1 口 Unknown 30 seconds N 10.BRIEP SUMMARY OF SIGHTING 11.COMMENTS Color was bright silver. Alt was lo0'. Evaluated as a/c. Almost hovering then level flight. ATIC FORM 329(REV 26SEP 52)

View this source page ↗

Investigate related details with Anomaly Graph’s account-based search, or read how matching and provenance work.