DECLASSIFIEDUSAF PROJECT BLUE BOOK · NARA T-1206
UNITED STATES AIR FORCE
PROJECT BLUE BOOK
UNIDENTIFIED FLYING OBJECT CASE FILES · 1947 – 1969
CASE REFERENCE8684193
DATE OF SIGHTINGOctober 1961
REPORTED LOCATIONDuluth Minnesota
FRAMES5
Machine transcription · mean legibility 86.6/100 ·
engines: paddle-gpu-200dpi
Transcribed Frames
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PROJECT 10073 RECORD CARD
1. DATE LOCATION
12. CONCLUSIONS
11 Oct 61 Duluth, Minnesota Was Bolloon
DATE-TIME GROUP Probably Balloon
. TYPE OF OBSERVATION D Possibly Balloon
Local_1940 Ground-Visual
Ground-Rodar 0 Was Aircraft PECKLOFR)
GMT_1207407 AirViwal 0 Probably Aircroft
5. PHOTOS Air-Intercept Radar Possibly Aircrolt
Y.s . SOURCE 0 Was Astronomicol
No Civilian 0 Probobly Astronomical
7. LENGTH OF OBSERVATION Possibly Astronomical
8. NUMBER OF OBJECTS 9. COURSE Other.
3-4 min 00 Insufficient Data for Evaluation
3 NE 0 Unknown
speed. Assumed orbital by observer except 3 to
5 times faster -ascerchan Echo. C than Echo. Covered about 110° 110° refueling +26 mission. Quick time sector of mission. quick chme
arc in 3 min. lst objt 15 times size of 2 lime soda (24,000-29,000). Speed, a1titue, (24,000-29,000). Speed, altituik,
trailing objts. lst objt yellowish; other 2 and duration of sighting conform to this and duration of sighting conform this
red tinit with apparent attachment to lst objt. red tinit with apperent attachment to lst objt. analysis. analysis.
ATIC FORM V 26 SXP 52)
*
.
.
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NATIONAL
AERONAUTICS AND
ANDSPACE AUTICS SPA
ADMINISTRATION
NASA HEADQUARTERS
NAAIN NOIL 1520 H STREET NORTHWEST
IN REPLY REFER TO AB U. S.A. WASHINGTON 25,D. C.
TELEPHONE: EXECuTIVE 3-3260 TWX:WA755
November 14, 1961
—
Commander of the Air Tactical
Intelligence Center
Department of the Air Force
Wright-Patterson Air Force Base
Ohio
Subject: Unidentified Flying Object reported by Mrs
of Duluth, Minnesota
Enclosures: Enclosures: 1) (1) Letter from Mrs. Letter Iron Mrs.z dtd. October 17, 1961
(2) Letter from NASA dtd. November 14, 1961 Letter from NASA dtd. November 14, 1961
are forwarded for your forwarded for your information information and for and for
whatever action n may be ceemed appropriate. appropriate.
James A. Hootman, Executive Secretary
Inventions and Contributions Board
Enclosures 2
a/s
-
-
0
121
1311
DCCCHALL
II
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For exmaple, the Wew York Herald Aribume reported an Beptember 1, 1960
the photographing of a mysterious reddish object sited over Chicago
and varions Fast Coast areas by a . trackding cuera of the Growan
Avlation Iagineering Corporation in Beth Page, Long Ialand, This
oceurrence is reported becwuse Mr. Robert Johnson, Director of
the Adler Planetariue in Chieago, aad hia eagistant reported seeing
that ob ject ond estimated that it was ling about thrre %imos
the speed of Echo I.
Space Acinistration bas peiibor
auch we have
therefore ferwarded your letter to the therefore forwarided your letter to the Eaopartment Eupertment of the of the Alr Force
which has the yrimary responsibility for iuvestigating this tyye of
report ing yeur 19 appreciated.
signed by
Original A. Hootman
Jemes
James A curtive Secretary
A
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2
INEANE
2 100 19:.
'NAN 08020
196121007010
REEEEI
.
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Chjects viewed in horizon
on
in Duheth, Minnesota.
A
This has been drawn This has been drawn
diegonally to get thom on to get thom on
the pag. page. They They First appoared First appoared
liKe liKe sphores sphores 2 and Then they and Then they B B
Were like this for 15-30 Seconds.
After that they appeared like
spberes again.
SpheraA was 15-20 times larqer
than B ar a when they were alnosk
directly avarhead. BC were the same
size then. =
D saemed to be ducts. Mrs.
sky was sis:ble at
points marked x. This aporodimates
the proportion of the Buc projectiles