PROJECT BLUE BOOK

PROJECT 10073 RECORD CARD
2. LSCATION 12. CONCLLS.ON
Penbrook, Pennsjivania Was Batha.n
ong Probablyal
4. TYPE OF OBSERVATION Possits welloan
1500E Ground-Visus. C Grouna-Rador WesA
Probav
JAT G AieVisaal Air-intercept Roser Passiy Aro
s. Anores 6. SOURCE Wos Astrenamrea.
DY.. 000 Probably Astronomical
Civilian couple PassiblyAstronomicel
1
7. LENGTH OF CBSERVATION B. NUMBER OF CBJECTS  9. COURSE 1 Cther
Insuffcient Dota for Lv atn
3 0 Unknown
1G. BRIEF SUMMARY OF SIGHTING BRIEF SUMMARY OF SIGHTING 1. COMMENTS 11. COMMENTS
Siher color. Round, thin. Drifted than Siher color. Round, thin. Drifted than
speed of plane. speed of plane.
ATIC FORM 329 (REV 26 SEP S2)

AF FORM 112—PART 1 (CLASSIFICATION
APPROVED I JUNE 1948
COUNTRY REPORT NO. (LEAVE BLANK)
United States
AIR INTELLIGENCE INFORMATION REPORT
SUBJECT
(UNCLASSIFIED) Unidentified Flying Objects Roporting (Short Titlo: FLYOBRPT)
AREA REPORTED ON FRM (Agmy) Intelligence Office
Middlotown Air Materiel Area Olmsted Air Force Base, Middletown, Pa.
DATE OF REPORT DATE OF INFORMATION EVALUATION
20 August 1952 18 August 1952
PREPARED BY (OAcer) SOURCE
John L. Spiegel, 2d Lt. USAF Civilian Cbserver
REFEENCES (Control number, directite, prerioua report, ele., as applicable)
Air Force Letter No. 200-5. 29 Apr 52
SUMmARY: (Enter conciae aummary of report. Give significance in final one-sentence paragraph. List inclosures at lower left. Begin tet of report on AF Form -Part I1.)
Reference TWX 171830Z this Headquarters reporting
sighting of unidentified flying objects by Mr.
Penbrook,Penna.,on 17
August l952. Investigation by this Office has revealed
that in all probability Mr. was observing three
aircraft. 4202010
Mr. ' estimates of the altitude of the ob- estimates of the altitude of the ob-
jects were from "ten feet above the trees to 250 feet",
but his contention that the objects disappeared inter- buthis contention that the objeots disappeared inter-
mittently behind the clouds which are kmowm to have
been'seattered at 5,00o feet indicates that the objects been'scattered at 5,0oo feet indicates that the objects
were mich larger and farther from him than he believed. were mich larger and farther fromhim than he believed.
A mumber of Air National Guard fighter aircraft are A number of Air National Guard fighter aircraft are
known to have been in or around the area during the time
of the observation, and Mr. admitted that he
heard "distant airplanes." Other comments by the ob-
server end his wife, who also witnessed the sighting,
very strongly indicate that the objects were aircraft.
2
0 INCLS.
DISTRIAUTION BY ORIGINATOR One cy to ATIC, W/P AFB, Chio for forwarding to D/I, Hq UBAF, Wash, DC.
One cy (info) to ATIC, W/P AFB, Chio
INTELLIGENCE, USAF.
(CLASSIFICATION)

PROJECT 1O073 WORKSHEET
I. GENERAL
1. DATE 2. LOCATION 3. TIME
17v 52 Penbrosb, Pa. Local:
Zebra: 290-12
L. WAS ODJECT OBSERVED FROM THE GROUND? [LPYos □] No
laked Eyo
Thiee ofjecto i.] Binoculars
Tolescope
[Theodolito
5. WAS OBJECT OBSERVED BY GROUND RADAR? Yes CSINO
By One Sot
JBy Tro Seta
]By Three Sets
6. WAS OBJECT OBSERVED FROM THE AIR? You y
A/C Observed Object
[C]Interception Attempted
No Intercept Attempted
7. WERE AIRCRAFT SCRAMBLED TO INTERCEPT? Yes Co
A/c Serambled
Visual Contact Made
A/I Contact Made L:A/I Contact Lade
CNo Contact Mado No Contact Mado
G. DID OBJECT CHANGE DIRECTION AT ANY TIME? 6. DID OBJECT CHANGE DIRECTION AT ANY TIME? Yes No No
CJNormal
CIViolent CIViolent
9. IF OBJECT WAS A "LIGHT", WAS IT: 9. IF OBJECT WAS A "LIGHT", WAS IT: Blinking Blinking
[4Stoady [4Stoady
10. LENGTH OF TIME IN SIGHT: 10. LENGTH OF TIME IN SIGHT: C1-15 Seconds
7 7 1-5Minutes
1| Over l0 Minutes 11 Over l0 Minutes
11. REPORTING AGENCY (Unit Number and Nailing Address)
1001a1 7 Olmsteal AFB, Pa. à0 AER
Co, Elight Oprations,
II. ASTRONOMICAL DATA
12. WHAT ASTRONOMICAL ACTIVITY WAS NOTED?
None
13. DID OBJECT APPEAR TO ARCH DOWNWARD? 1 1 Yes [INo
14. DID OBJECT HAVE A TAIL? !! Yes []No
15. DID OBJECT APPEAR TO DISINTEGRATE? Il Yes No
16. TIME OF SIGHTING RELATIVE TO SUNRISE OR SUNSET (Data FrOm AIr Almanac)
CNight
□] Day
Sunrise
[:Sunset
III. AIRCRAFT DATA
17. WERE AIRCRAFT NOTED IN AREA? Yes No
[]One Aircraft
C]Nore Than One Aircraft
18. WAS ANY SOUND HEARD? crTes TTNo
No
20. WAS THE OBJECT VIEWED ABOVE 45O ELEVATION? Yes []No
AT1C Test Form 334 (13 Aug 52)

IV. BALLOON DATA
21. WERE BALLOONS RELEASED IN AREA? TYes No
22. TIME SINCE SCHEDULED BALLOON RELEASE: 240Ninutes
23. POSSIBLE BALLOON LAUNCH SITES DOWNWIND OF SIGHTING:
Lighted? Deseribe
Location Type Launching Agency Yes No Lighting
a. P USDAWB
b. 1
C.
d.
(attach overlay)
V. EVALUATION
21. EVALUATION OF SOURCE: 22. DETAILS OF REPORT:
Excellent Good
Good Tuood Fair
Fair Poor
Poor Insufficient to Evaluate
Unreliable
ExtremelyDoubtful
Hoax
23. FINAL EVALUATION:
WasBalloon Was Astronomical
ProbablyBalloon Probably Aonomical
PossiblyBalloon PossiblyBalloon Possibly A:incmical PossiblyA:incmical
Was Aircraft Other:
Probably Aircraft
[]Possibly Aircraft
Unknown
24. COMMENTS:
ATIC Tost Form 334 (13 Aug 52)

PROJECT 10073 WEATHER DATA SHR
1. DATE OF CBSERVATION 2. TIME OF OBSERVATION 3. STATION OBSERVING
17ang52 19002
42 WINDS ALOET: VELOCITY DIRECTION ALTITUDE
ALTITUDE DIRECTION
(feet) (knots) (degrees) (feet) (knots) (deprnes)
0 10 2.80 25,000
1,000 30,000
2,000 35,000
3,000 40,000
4,000 45,000
5,000 50,000
6,000 55,000
7,000 60,000
8,000 65,000
9,000 70,000
10,000 75,000 75,000
12,000 80,000
14,000 14,000 85,000
16,000 16,000 90,000 90,000
18,000 95,000
20,000 100,000
5. WAS AN INVERSION LAYER NOTED? Yes CINo
(If yes, at what altitude?
6. WERE ANY THUNDERSTORMS NOTED IN AREA? Yes No
(If yes, at what quadrant? )
7. CLOUD COVER: 8. VISIBILITY WAS
tenths atfeet. tenths at feet. 15MILES.
tenths at feet. tenths at
9. COMMENTS:
ATIC Tost Form 333 (13 Aug 52)

ACTION S1.ATIAA5
ATIAA
18AUG521409
3ATIA
RAD20
he. Files
MPB121 J
Y.A 239
JEDLS A 330
OPOP JHPHQ JEDWP JEDEN 333
AJADLS 7B
1718302
CO FLTOPRS CLMSTED AFB MIDDLETOWN PENN
TO JHPHO/DIROFINTEL HO USAF WASHDC TO JHPHO/DIROFINTEL HO USAF WASHDC
JADWP/CO AIR TECHINTELCEN WRIGHT-PATTERSON AFB OHIO
JLOEN/CG ENT AFB COLORADO SPRINGS COLO JLOEN/CG ENT AFB COLORADO SPRINGS CCLO
JEDWP/CG AMC WRIGHT-PATTERECN AFB OHIO JEDWP/CG AMC WRIGHT-PATTERECN AFB OHIO
ATTN AT1AA-2C FLYOBRPT MAEO 8-2 RE AFL 203-5. ON 17 AUG 52 ATTN AT1AA-2C FLYOBRPT MAEO 8-2 RE AFL 203-5. ON 17 AUG 52
APPROXIMATELY 150BE ONE OK PENNA
REPORTED SEEING THREE FLYING OBJECTS DESCRIBED AS ROUND THIN THE SIZE
OF A FOOTBALL AND SILVER IN COLOR. NO DEFINITE FORMATION NO EYHAUST
OR TRAIL. THE OBJECTS DRIFTED WITH THE BREEZE AND AFTER A FEW MINUTES
TOOK OFF TOWARD MIDDLETOWN AT ABOUT THE SPEED OF AN AIRPLANE. WHILE
THE OPJECTS WERE IN SIGHT THE SOUND HEARD WAS AS A DISTANT AIRCRAFT.
THE OBJECTS WERE 25O FEET HIGH AT ABOUT 83 DEGREES. THE SIGHTING WAS
WITNESSED BY MRS WEATHER REPORT FROM HARRISBURG AT THAT TIME
WAS FIVE THOUSAND FEET SCATTERED CLOUDS AND 15 MILES VISIBILITY.
TI: WIND WAS WEST NORTH WEST 12 MILES PER HOUR.
17/2115Z AUG JEDLS