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Archive case record

Colorado Springs, and Denver, Colorado, December 1955

Date of account
1955-12
Location
Colorado Springs, and Denver, Colorado
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 AISS-UFOB-l12-55 1.DATE 2.LOCATION 12. CONCLUS1ONS Colozado 口 Was Balloon 11 December 1955 Colorado Springs, and Denver, 口 Probably Balloon 口 Possibly Balloon 3.DATE-TIME GROUP 4.TYPE OF OBSERVATION (113302) Ground-Visual 口 Was Aircraft Local. Ground-Radar 口 Probably Aircraft 11/30ZDec55 AirVisual Air-lntercept Radar 口 Possibly Aircraft GMT 5.PHOTOS 6.SOURCE Was AstronomicatlleTeo Yes 口 Probably Astronomical 强NO Mlitary and Civilian 口 Possibly Astronomical 7.LENGTH OF OBSERVATION 8.NUMBER OF OBJECTS 9.COURSE, 口 Other. 口 Insufficient Data for Evaluation One (1) 口 Unknown 3-5 Seconds NW 10. BRIEF SUMMARY OF SIGHTING 11.COMMENTS Three pobservers, all same description. One (l), object, green with an orange trail, Definitely identified as meteor by USAR much brighter than jet exhmunt. Captain (Pilot). (WO CASEIW FILE) AISoP Form5 (150ct54)

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