PROJECT BLUE BOOK

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| PROJECT 10073 RECORD CARD

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1. DATE — | 2. LOCATION 12. CONCLUSIONS _
0 Was Balloon
__27 April 1955 Bryn Mawr, Pennsylvania} |G Frebably Balloon
‘3. DATE-TIME GROUP 4. TYPE OF OBSERVATION st a A ch
- O Was Aircroft
Local Ott 8=220- Fp BM XGround- Vi sual D Ground-Radar O Probably Aircraft
GMT_28/01107 0 Air- Vi sual 0 Air-Intercept Radar OD Possibly Aircraft
5. PHOTOS 6. SOURCE 0D Was Astronomical Jupite
0 Yes 0 Probably Astronomical
XIXNo Civilian PEK Possibly Astronomical
‘7. LENGTH OF OBSERVATION iC NUMBER OF OBJECTS | 9. COURSE 10 , Other .
| 0 Insufficient Dota for Evaluation
50 A }O Unknown
minutes one | N/A ue
10. BRIEF SUMMARY OF SIGHTING el COMMENTS
Bright light, varying in color and

shape, First round, then cigar shape

then boomerang shaped. When last

seen, appeared like distant star.
First white then alternated red to
green, Hovering.

ATIC FORM 329 (REV 25 SEP 52)

cd

Rei uerehtsuid hm ered eas sta har ebnction ttt « et an ee

Jupiter in position reported,

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\ DEPARTMENT OF THE AIR FORCE
HEADQUARTERS UNITED STATES AIR FORCE
WASHINGTON

THE INSPECTOR GENERAL, UGAF
STM DISTRICT OFFICE OF SPECIAL INVESTIGATIONS
WRIGHT-PATTERSON Al® FORCE BASE. OFT0

fax agar
iN REPLY REFFR TO: 5D 2h—21<170 12 May 1955
SUBJZOT: (Unclassified) |

Sighting of Unidentified Flying Object at
Philadelphia, Pa., between 2110 hours and
2200 hours, Esstern Daylight Time,

27 April 1955

TO Comnander
Air Technical Intelligence Senter
Wright-Patterson Air Force Bass

Ohio
ATTN: ATIAA-26

1. Transmitted herewith for your information is one (1) copy
of letter fron District Office No. 3, P. O. Box 709, Harrisburg,
Pennsylvania, dated 5 May 1955, concerning subject matter.

2. Your attention is invited to the provisions of ‘FR 124-1,

which prohibit the release of investigative information to unauthor-
ized persons. ,

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ff j ~ “———— / | Pray \y

>. - ; sits x4
eC hy We ard) CS
i ag feo.
1 Incl ROBGRTS P, JOHNSON, JR.
Cy ltr fr DO #3 Colonel, USAF
dtd 5 May 55 District Commander
ec: Dir OSI w/o Incl
: COR Oe oe
=P — 3% ore
DOWNGRADE 5 rT Noro
nie DECLANS et UNCLASSIFIED

DOWD v.--

GE-OSL-199-4

VIA AIR MAIL TO:

Air Technical Intelli gence

Center, Wright-Patterson AFB
Ohio

a)
a ee

290 56-1
aM *
© ’ een AY 1955

SUBJECT: Sighting of Unidentizied Flying Shject az
Philadelphia, Pa., Letwoon 2110 hours and
2200 hours, Laster Daylight Tine,
87 April 1965 -
POF COUNTER INTELLICSME SRPORP AND
SPORTS INCLUDING SSSENTIAL WLESENTS %&
TSF ORMATION

TOs hivector, Special Investigations
_Ugadquarters United States Alz Force
Uiashington 25, 2. U,

3%. SYNDPS nterviewed on 20 April 1955,
stated that on JZ

ehile on duty a3 a oauber of Sround Observer © described
object 2s a bright light, varying in color and shape. Seport ?rom J. 3.

Veether Bureau concerning weather ou 27 April 1955 set forth.

2» On 28 April 1955, oe: intoxviernd
by Special Agent JOTI SG. SSS FHAN lace of employment, the Philce

[orporation, 2700 Hissahickon Avenue, Phi latolphis, 73. RD stared
chat mile on duty a3 2 2onher of the Sround Observer Vorps on the »reced-
ing evening, be had sighted a2 unidentiZied flying shiect.
stated that the abject 2ppeared round when tires ge Pees at auk for hrieZ
intervals iecmntok shaecated {cigar-shaped) asd once anpesred in the shepo

of 2 boomerang. According 7 es oa object was betueca the size
o£ a dime and quarter when first gichted and whea last secu shout the sizs
of 4 ginbeed and *aecered Lites tetas gtar, ‘With reverence to color,

PATTERSON advised that the object Zirst appe brilliant white i
ne, aa alternated to ved and green in that order, stated that }
aid distinguish no Zeatures or details and cou Stice ao tail, trail,

VWs rei tN a BS | Al si:
es & | "CRADED AT: a iN ,
i ie shines PO MECLASSIF' TED Abr 12 YEARS.

DOD DIR 5200.10

—— ee

- ee

“A District OSI SPOPr INNSLIGENCE SBPOrt, Sudj: Sichting of ‘midont altos
*\ping Object at Philadelobia, othe y catwvoeen ~ ad hours asd 22 NOUS,
astern Daylight Time, 27 April 1955 - oProt / BR INTELLIGENCE PeeP>

3th eh tee ahha . ret |

“SBORTS INCLUDING ESSENTIAL GLEUENTS oF THFNK Aaron | |

32 @xhaust. a coe a> maid not bear any sound from the
djeet and at: t.! he saw a ray of Licnt shoot out {roa

-h@ object. ated that is attention way first dram to *he
7 ob — sy its b ness and unusual solor changed ond in previous seaneing

she course oZ his du had sot Seen thero. The nositien oF the
~ajest, aecording when he Yirst noticed it, was aporoxionrely

‘@ Southwest and at a JO? to 45° angle of slevution. Mecording to
the ~oject was 3ti1] visible when he tent off duty ae 2200 heures, TOT, bur

i*@ position Sad changed *%o a2 nest souwihnest bending sant the angle of ecleva~
Siow had lessened slic ty 9$ though the object had moved out into tpece.
iecording 5 ne object sppenredt + 20 be hevertiag oe pivoting

Silgatly « oaly ° “ove 3% cO 3h position wheres be tast observed
2% where it ocain hovered ststed that he was able to abserve

ci object for a veriod of Titty (50) sinutes oy ground-yigual vose i
without optical aids other than wrnal ayegiasses. Ancording ¢ . ae,
he Yizst observed che objece at 2110 hours, EGY, 27 April 1955 2601102 Ane
Veinesday aight, froma the Ground Observer Corns Post “LR - the rong of
*@ Sryn Slaer Voesoits!, Deyn or, Pa. sdvisod that she observma-
tion beota is located on the uortheast corner of the roof vith the acor faci
Southwest and he was stomiing ia cha deer at the time of sighting. anne,
ivised that be vesides 2% 152 Gramiview Road, Arczora, Usa., be tms bora 23
Jamary 3915, aad that te is amployed ag on Adsinistxrative Clerk for tre
Philse Corp at 4700 Wissahickon Avonuc, Philadelphia, Pa, utvised
cnet be vas been 2 weber of the Ground thserver Sorns since june LOTA oni
40at ivyed 30 formal training in Alrerats “dentification. Accord
ug 2 ¢ the tazather at the gine af sighting 0S cloudy bat sleariz
with tre cloud over moving tmpidly south. The wini mas frod the serch sd

208 moon was shini rightly in the some yoneral area whee the obiect
ope Seribed the visibility as infinite md the ceil iny 33
udhimited ia area where the abject was sighted. QGRMMMBstsced chat ot

2115 hours, SDY, be reporiad nis ae of the abiest to Lt. LEVIN at

he Trenton Tileer Center, Ground Observer Corps, and wos later sxdvised by

LaVIN that otser posts in the rs Bao ci unable to Sight the object.

9) |

be ‘She lollowing 3 zonation concern 3} ihe eather on Sednesday
night, 27 April 2955, vas supplied by "ir. NATHAN GLLIS, ‘ateorolanist, at
Las Se Varrher F Onpem, ht late? tpbie, VBes , ill “YY Aprai 17G5~ Az 07 house
EVP, surface winds tere orem the north, oy? j iomis, seattered cloud
lu porthern quadrant ae ONCD; visibility 3 nites. pach chou sover in “eg
Onadrant. Hinds atore a4 4 1515 ho TS ae oeTres ei 200, 20? a ‘pass

ttt sg
10, OCD). 757, 15 tmats

DOWNGR ADEN AT wrk £
DECLASSIV ID) AFTER
DULY Dik

Lt? 60

DOWNGRADED AT 3 YEAR INTERVALS;
DECLASSIVi“D AFTER 12 YEARS.

cA Distriot OSZ Seer INTELLIGENGR cEPodT, Subj Sighting o£ Unidontizied

i tying Object at Philadelphia, Pa., between 2110 hours and 2200 hours,
Eastern Daylight Time, 27 April 1955 - SPOT COUNTER INTELLIGENCR DePort AND
INCLUDING SSSENTIAL CLEMENTS OF IMPOMIATION

15,40, 20° +d 3 knots

20,000, 210 3° m NAS
Dy OD, w00 ne - 239 <nots
008, 210", oy) Bw ints
5,000, not available
0,000, sat available

Mind as 2200 hours, EOP, at 5,000, 40”, 32 knots. ‘othing farther secorded
Oe this time. No thunderstoms were reported in the area aml there was no
ummal activity or condition, seteorelojical, astronomical, or otherwise
iLnowt to the Neathor Suregu,.

4

“¥

he Me additional investigation of this matter is 7? epee
by this District unless otherwise requested by competent authority 3
gecertance with APOSI Letter No. 5, dated 7 Jamax7 L953, The Air Technical
Tatelliceace Center, Uright-Patterses AB, Dayton, vhio, and the Commander,
iia Castle County $2 Botan Niimington, Gelauere, have been furnished conies
w2 this commuication,

<6 This report is a te the authority

contained in vertevuph 24a, AFR 208-1.

Lt Colonel, USA¥

District Commander
ete, 8/P AFB, Ohio
ON / eens ATTAAW2E

Comir, CLA, Del.

Comdr, Alr Defense Conannd
Snt AFB, Colorads Springs, Colorado

UNCLASSIFIED

DOD Dik 5200.10