PROJECT BLUE BOOK

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PROJECT 10073 RECORD CARD
1. DATE 2. LOCATION 12. CONCLUSIONS
Wos Balloon
21 May 1957 Ventura, California 000 Probubly Balison
3. DATE-TIME GROUP 4. TYPE OF OBSERVATION Possibly Bulloon
Local_ to Ground-Visual Ground-Rodar 00 Was Alrcraft
Probably Aireroft
GMT21/1530 1553Z Air-Visual Air-Intercept Radar D Possibly Aircraft
5. PHOTOS 6. SOURCE Was Astronomical
Yes 100 Probably Astronomical
.No 2 Civ plus 20 students Possibly Astronomicul
7. LENGTH OF OBSERVATION 7. LENGTH OP OBSERVATION 8. NUMBER NUMBER OF OF OBJECTS OBJECTS  9. COURSE . COURSE D Other. Other_.
faded out of faded out of Insufficiont Dota for Evaluation
D Unknown
23 23 1 minutes one sight
10. BRIEF SUMMARY OF SIGHTING 10. BRIEF SUMMARY OF SIGHTING 11. COMMENT'S 11. COMMENTS
One object. One object. Round, size head of pin, No radar paint, however, there is No radar paint, however, there is
color silver color siiver or white. Object sighted a blind spot in aren of sighting a blind spot in aren of sighting
after jet noise breaking sonic barrier and does and does not paint not pain all a/c in
Object hardly moved then oscillated vicinity. But, fm description of
& faded fm sight. obj & time in view it is believed
obj was a balloon or a/c. There
is considerabie amount of small
a/c in this vicinity. Insufficien
data for valid conclusion.
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ATIC FORM 329 (REV 26 SEP 52)

15302 2115305
(F) LIGHT. TM AT VENTURA HIGH SCHOOL 1/2 MILE SOUTH EAST OF GOC POST
34 DEG 16 MIN NORTH BY 11S DEG 16 MIN WEST KYLKA) MAVENTURA HIGH
SCNCOL, SCHOOL TEACHER PENTURA GOC, PLUS APPROXIMATELY
4 (C) UNLINITED (D) UNLIMITED (E)
BMJECT RECT SIGHTED SIGHTED OVER CALIFORNIA object maneuve object maneuver Slackwell, said they Slackwell, said they wsted the abject wstd the abject
BY CHEMICAL SUPERINTENDENT SUPERINTENDENT San Diega Bay. meneuer for more thon 45 minutes. 3lack- meneumer for more thon 45 minutes. 3lack-
The abject glisterved in the sum and The object glisterved in the sum and well said the UFO looked like a silver well said the UF "looked like a silver
No explanation has bean found to date followed followed on an Irregular path, " Martin told doller at times. doller at times."
For the UFO sighted for the UFOs sighred Mary 21 by Don Martin, Mary 21 by Don Martin, Chula Vista police. Ho said he watched Martin watchod the UFO through bin- Martin watchod the LFO through bin-
uparintendent of usarintendent the Westvaco Chomical the Westvaco Chomical it as "it carte in aver the Silver Strand, it as "it carne in aver the Silver Strand, aculans and sald thart It eppsared round to aculans and sald thart It appsarad round to
ivision Mont in Chula Viste, Califomia. Division Mont in Chula Vista, Califomia. traveled east and doubled back west. Then the eye but eillptleal with the binoculars. the eye but eiliptleal with the blnocuiars.
Aartin and anorher Westvaco company It just diaappeared." reportind th reportind the obnervatian to the Chula obnervarian to the Chula
ployee reported seeing a whit, round mployee whim, round Martin and a fellow amployes, William Martin and a fellow amployes, William Vista polica. Vista police.
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PAGE TVO RJWPJB 20L
VERY LITTLE SCATTERED (F) NONE. KIL NEGATIVE (SL NEGATIVE (E) NEGATIVE
(11) INTELLIGENCE OFFICER, ASTLT, THE NEAREST GCI SITE (ART) DID NOT
PAINT THE OBJECT, HOWEVER THE OBJECT WAS SITED IN AN AREA WHERE ART
HAS A BLIND SPCT AND DOES NOT GET DETECTION ON ALL AIRCHAFT IN THE
VICINITY. FROM THE COLOR OF THE OPJECT SHAPE AND LENGTH OF TIME
CESERVED IT IS ESTINATED THAT THE OBJECT WAS EITHER AN AIRPLANE OR
MATHER BALLCON. THERE IS A CONSIDERABLE AMOUNT OF SMALL AIRCRAFT
I THIS VICINITY. (13) NEGATIVE. -
.T
R1/2 11Z MAY RJWPJB

CATIE AE
81 20 A22 ZSASI1Z P
-0n M2119 9 Tee ar dMPy Ig
10-2-55016 BHPERE AMDEE BEDRE P
L11B5 MHdM
20851/ A
(
May
after hearing 3 explosions(Sky-Quakes? after hearing 3 explosions(Sky-Quake )'was se 75°
from Horizon;traveling NW at about 40, NW at about (ThanX:VCUFOSG) Th VCUFOSG)
May 2l-San Diego Bay,Cal-Day-A glistening,silver veling E.
nr. SE tip of Bay. Object followed an irn egular path doubling
ed round to the naked eye but elliptical thru Binoculars..
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