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Archive case record

Sioux City, Iowa, March 1956

Date of account
1956-03
Location
Sioux City, Iowa
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

PROJECT10073RECORDCARD 1.DATE 2.LOCATION 12.CONCLUSIONS 口 Was Balloon 21 March 1956 Sioux City,Iowa 口 Probably Balloon 口 Possibly Balloon 3.DATE-TIME GROUP 4.TYPE OF OBSERVATION XNGround-Visual 口 Wos Aircroft Local Ground-Rodar 口 Probobly Aircraft GMT 22/0530Z Air-Visual Air-lnterceptRadar Possibly Aircraft 5.PHOTOS 6.SOURCE 口 xWos Astronomical Meteor DYos CKXprobobly Astronomical ONOX Civilian P Possibly Astronomicol 7.LENGTH OF OBSERVATION 8.NUMSEROF OBJECTS 9.COURSE 口 Othsr- 口 Insufficiont Data for Eyaluation 口 Unknown fow seconds one west 10.BRIEF SUMMARY OF SIGHTING 11.COMMENTS One round object size of an orange Probable meteor sighting. appearance of star, grew larger to the West. ATICFORM329(REV 25SRP 52)

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