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Case FileNARA NAID 28976156 · T1206 Roll 31

Project Blue Book Case File

Englewood, ColoradoDecember 1957

Unidentified

Summary

Project Blue Book, the U.S. Air Force's 22-year UFO investigation program, opened a case file on a sighting reported from Englewood, Colorado in December 1957. The case file consists of a single scanned page held by the National Archives. The Air Force assigned this case to its broader investigation of unidentified aerial phenomena alongside ~12,600 other reports filed between 1947 and 1969. Citation: NARA Record Group 341, Microfilm Publication T1206, Roll 31.

Reported location

Englewood, Colorado

Date of incident

December 1957

State / country

CO / US

Page count

1 scanned page

USAF evaluation

unidentified

Microfilm

T1206, Roll 31

Original case file scans

Original case file · scanned by NARAPage 1 of 1
Transcribed text
PROJECT 10073 RECORD CARD

1. DATE                          2. LOCATION                    12. CONCLUSIONS
15 December 1957                 Englewood, Colorado             [] Was Balloon
                                                                  [] Probably Balloon
3. DATE-TIME GROUP               4. TYPE OF OBSERVATION         [] Possibly Balloon
Local _______________            [X] Ground-Visual              []
                                 [] Ground-Radar                 [] Was Aircraft
GMT 16/0035Z                     [] Air-Visual                  [] Probably Aircraft
                                 [] Air-Intercept Radar          [] Possibly Aircraft
5. PHOTOS                        6. SOURCE                       [] Was Astronomical
[] Yes                           Civilian                        [] Probably Astronomical
[X] No                                                           [] Possibly Astronomical

7. LENGTH OF OBSERVATION         8. NUMBER OF OBJECTS  9. COURSE [] Other
one & one half to 2 mins          one               circle     [X]Insufficient Data for Evaluation
                                                                  [] Unknown
10. BRIEF SUMMARY OF SIGHTING   11. COMMENTS

One object seen flying in a circle for Insufficient data for analysis.
1 1/2 to 2 minutes.

                                 No report in file.

ATIC FORM 329 (REV 24 SEP 52)
/ 1

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Source: National Archives Catalog · NAID 28976156

Connected across the archive

Organizations

ATIC

Places

ColoradoEnglewood, COEnglewood, Colorado

Agencies

Air Technical Intelligence CenterUnited States Air Force

Dates

15 December 195719571957-12-01

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