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Archive case record

Vicinity Cheyenne, Wyoming, May 1958

Date of account
1958-05
Location
Vicinity Cheyenne, Wyoming
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 1.DATE 2.LOCATION 12.CONCLUSIONS 口 Was Balloon 12May58 Vicinity Cheyenne,Wyoming 口 Probably Balloon 口 Possibly Balloon 3.DATE-TIME GROUP 4.TYPEOF OBSERYATION xWas Aircraft Local xGround-Visual Ground-Radar 口 Probably Aircraft 12/2000Z D AirVisual Air-lntercept Radar 口 Possibly Aircraft GMT 5.PHOTOS 6.SOURCE 口 Was Astronomical Yes 口 Probably Astronomical 口 Possibly Astronomical XQNo Civilian 7.LENGTH OF OBSERVATION 8.NUMBER OF OBJECTS 9.COURSE D Other 口 Insufficient Data for Evaluation 口 Unknown 30 mins one East 10. BRIEF SUMMARY OF SIGHTING 11.COMMENTS Egg shaped obj, white or silver w/ Obj verified as jet a/c. Doing tumbling flight. acrobatics. ATICFORM329(REV 26SEP 52)

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