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Archive case record

Riverside, California, December 1957

Date of account
1957-12
Location
Riverside, California
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

UFOB INDEX CARD A7SS-1U008-734-57 1.DATE 2.LOCATION 12. CONCLUS1ONS ~10-Jan-58 Rivarside, Califormia 口 Was Balloon 口 Probably Balloon R Possibly Balloon 3.DATE-TIME GROUP 4.TYPE OF OBSERVATION 02/2208z Dec 57 Ground-Radar 口 Was Aircraft Ground-Visual Probably Aircrofi AirVisual 口 Air-lntercept Radar 口 Possibly Aircraft 5.PHOTOS 6.SOURCE 口 Was Astronomical Yes 口 Probably Astrononical 口 Possibly Astronomical Civilian 7.LENGTH OF OBSERVATION 8.NUMBER OF OBJECTS 9.COURSE 口 Other. 口 In sufficient Data for Evaluation Four minutes Stationary 口 Unknown 10. BRIEF SUMMARY OF SIGHTING 11.COMMENTS Two mhite bbjects the siza of a pea. Concur with Reporting Officer that Objects Hero atationary amd vore in sight this was possibly a balloon.- for 4 minutes. AIS0P Form5(150ct54)

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