PROJECT BLUE BOOK

PROJECT 10073 RECORD CARD
1. DATE 2 LOCATION 12. CONCLUSIONS
D Was Balloon
9-10 September 1957 Philadelphia, Pennsylvania 0 Probably Balloon 7
3. DATE-TIME GROUP 4. TYPE OF OBSERVATION D Possibly Bolloon
Local Ground-Visual Ground-Radar 0 Was Aircraft
0 Probably Aircraft
GMT --- AirVisuol Air-Intercept Radar 0 Possibly Aircraft
5. PHOTOS 6. SOURCE 0 Was Astronomicol
Yes Physical 0 Probably Astronomical
No Specimens Civilian 0 Possibly Astronomical
7. LENGTH OF.OBSERVATION 8. 9. COURSE axOther_Chaff
D Insufficient Data for Evaluation
0 Unknown
not rptd multinle falling
TO. BRIEF SUMMARY OF SIGHTING 11. COMMENTS
Letter to FBI requesting information Evaluated as chaff used in jam-
regarding metal foil objects observed ming radar.
falling from the sky.
. 1
ATIC FORM 26 SEP 52)
.
E4D

Dear Mr.
Your letter of lo September to Mr. Edgar Hoover, Federal
Bureau of Investigation, regarding scme metallie cbjects found
falling frcm the sky. has been referred to the Air Force for
review.
Please be advised that the metal foil isa well known mater-
ial used for eleetronie jarming by bombers and fighters to render
among radar usel less affective ferred to as
Metuchin is located adjacent to some of the heaviest air
traffie This may be confirmed by a
review of Aero Chaxt . 3l0. which can be obtained for the sum
of twenty-five contt Department of Coumnerce. The
material undoubtedly dropped aircraft during training
flights or simulated radar 97
With regard to the theories. opinions and allegations advanced
established a rule 28 involved in, or
coument.on speculative discussions.
Your intereat in this matter is appreciated.
Sincerely,
1

AIR TECHNICAL INTELLIGENCE CENTER
UNITED STATES AIR FORCE
WRIGHT-PATTERSON AIR FORCE BASE
OHIO
2 2 OCT 1957
AFCIN-4E4
SUBJECT: (U) Copies to Replies to Messrs - an
TC: Secretary of the Air Force
Headquarters, USAF
ATTN: Major Tacker
Washington 25, D. C.
copies reply correspondence to subject
persons who contacted re-
garding UFO incidents.
2. Copy of you 2. Copy of y forwarding forwarding letter also attached. letter also attached.
\ FOR THE CO FOR THE - iSe.
Sa
3 Incls Incls
1. Cy 1. Cy 1tr to Mr. Mr WALLACEW. ELWOOD WALLACKW. ELWOOD
2. Cy ltr to Mr. 2. Cy ltr to Mr. Captain, USAF
3. Cy ltr fr SArIS 3. Cv 1tr Assistant Adiutant

SAFIS-3/Maj Tacker s/73328/2 Oct 1957
2 October 1957
/
Dear Mr.
Your letter of lo September 1957 addressed to the
Federal Bureau of Investigation concerning aerial phenomena
in the Philadelphia area on 9 and 10 September 1957, has
been referred to the Air Technical nce Center,
Dayton, Ohio for evaluation.
Sincerely,
LAWRENCE J. TACKER
Major, USAP
Executive Officer Executive Officer
Public Information Division
. Office of Information Services Information Services
Mr M
Avenue k Avenue
Mecichen, New Jersey Morcicher ew Jersey
SAFIS-3 - comeback copy
S AFES-1 - eading copy
5 18 se
vt

Dear Captain
Inclosed, please find letter from Mr.
regarding unexplained aeriel phenomena in the Philadelphia,
Pennsylvania 9 and 10 September 1957.
Mr been advised of this referral.
Also inclosed is a letter from Mr of
Bakersfield, California reporting sighting an Unidentified
Flying Object.
These These Ietters are Torwarded co your Headquarcers for letters are forwarded iquarters for
possible investigation and/or possible investigation and/or evaluation. evaluation.
Sincerely, Sincerely,
2 Inclosures IAWRENCE TACKER
1. 1. ltr fr Mr. Major, ySAF Major, ySAF
2. ltr fr Mr. Executive Officer Executite Officer
Public Information Division
Office of Information Services of Information Services
Captain Wallace W. Elwood, USAF Captain Wallace W. Elwood, USAF
Assistant Adjutant
Air Technical Intelligence Center
Wright-Patterson Ain 'ce Base, Ohio
40j
inawd. Lee "Intatuts
1ti5 ibo
F
Til