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Archive case record

NW Of Chicago/Crystal Lake, July 1958

Date of account
1958-07
Location
NW Of Chicago/Crystal Lake
Source
uap_archive
Record updated
2026-10-10

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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 E 2.LOCATION 12. CONCLUSIONS αXWas Balloon 20Ju1 58 Ny of Chicago/Crystal Lake 1Probably Balloon Possidly Balloon 3.DATE-TIME GROUP 4.TYPE OF OBSERVATION Local1607 CDT Ground-Visual Ground-Radar Was Aircraft 口 Probably Aircraft GMT- 20/2207Z OKAinVisual DAir-lntercept Radar 口 Possibly Aircraft S.PHOTOS 6.SOURCE 口 Was Astronomical OYos 口 Probably Astronomical Civilian Possibly Astronomical PNo 7.LENGTH OF OBSERVATION 8.NUMBEROFOBJECTS9.COURSE 口 Other. 口 Insufficient Data for Evaluation 口 Unknown 4-6 secs SE 10. BRIEF SUMMARY OF SIGHTING 11.COMMENTS Disc shaped obj, size of basketball, Everything points to obj being non-reflective white. No sound.Had a balloon. straight flight, passed fm view gehind a/c. ATTC FORM329 (REV 26SEP S2)

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