PROJECT BLUE BOOK

. DATE · TIME GROUP !. DATE · TIME GROUP 2 LOCATION
15 August 64 15/16152 15 August 64 15/16152 Yosemite Park, California
.SOURCE .SOURCE 10. CONCLUSION 0. CONCLUSION
Civilian UNIDENTI FIED UNIDENTI FI ED
4. NUMBER OF OBJECTS 4NUMBER OF OBJECTS
Three Three
5. LENGTH OF OBSERVATION 11. BRIEF SUMMARY AND ANALYSIS
3 - 4 Seconds Three objects in forra tion. Estimated alti tude 5-7,ooo ft.
6. TYPE OF OBSERVATION Paralell fligmt. Bri ght silver objects. Daylight observation.
Sound of air only, no jet a/c sound or anything. Altitude
Ground-Visual ould not hnve been great because sound and sight of object
7. COURSE occured at same time. Objects seemed small even though at
close range.
West
8. PHOTOS
Y•s
XNo
9. PHYSICAL EVIDENCE
)
17 Y.s
XNo
FORM
FTD SEP 63 0-329 (TDE) Previoue editions of thle form may be ueed.

/
ga 6
. Have you ever seen this, or a similar object before. If so give date or dates and location.
31. Was anyone else with you at the time you saw the object? (Circle One) Yos No
31.1 IF you answered YES, did they see the object too? (Circle One) Yes (No
31.2 Please list thoir names and Iresses:
1
MENLC MENLC PARK, CALIF PARK,CA ALIF
32. Please give the following information about yourself: 3.Please give the following information about yourself:
NAME
Last Name First Name Middle Nome
ADDRESS
Streot City Zone Stae
TELEPHONE NUMBER AGE SEX
Indicate any additional information about yourself, including any special experience, which might be pertine.
I.SERLCD IM THE LS ARRCY AH FERCE
14113-146 6d 4HLE 2C-20 6LASS
4 gomo
When and to whom did you report that you had seen the object? .When and to whom did you report that you had seen the object?
26 1964 TCLSCCUERNMENT ".
Day Month Year LFEINFCNLIHTION
LLAS+LOTSN,DC

Page 7
34.Date you completed this questionnaire: 14 CiT 146.4
Day Month Year
Informatin which yu  pertinent nd whichis not adequaty coverd i te specic points t
questionnaire or a narrative explanation of your sighting.
//1
WAAIR MAIL WAAIR MAIL San Francisco 12, Calif.
MA
501
1 Washington, D.C. UFO Information
United States Government
nment
AIR
UE US
-
i1

B
nq64
NEVER USE FOR APPROVALS, DISAPPROVALS, ACTION
MEMO ROUTING SLIP CONCURRENCES. OR SIMILAR ACTIONS
1 TO INITIALS CIRCULATE
Dr J Allen Hynek DATE COORDINATION
2 FILE
INFORMATION
3 NOTE AND
RETURN RETURN
PER CON-
VERSATION
4 SEE ME SEE ME
SIGNATURE
REMARKS
Forverded per your request: Forvarded per your request:
(1) 15 Aug 64, Yoseni
Case File. ..
(2) 10 Sep 64, Cedar Grove
ove, New Jersey
Case File.
FROM FROM FTD (TDEW) 21Dec 64 21 Dec 64
216 69216
DD 9 DDR 5 Repiaces DD Form 94, 1 Feb 50 and DD Form 95, Repiaces DD Form 94, 1 Feb 50 and DD Form 95, GP0 1961 0-596753 GPO 1961 :0-596753
1 Feb 50 which will be used until exbausted. 1 Feb 50 which will be used until exhausted.

H
September 30, 1964
Dear Mr
This is in response to your recent letter
concerning the sighting of unidentified
flying objects in the Yosemite area of Northern
California.
While your description was very While very interesting,
it was not in sufficient detail in sufficient detail to enable to enable our
investigators to make an evaluation. investigators to make an evaluation. Therefore,
we are inclosing a form we are inclosing a form FTD 164 which FTD 164 which we request
you complete in as you complete in as much detail as much detail as possible and
return to the Ai return to the Air rce Upon receipt of the Upon receipt of the
completed form, anothe completed attempt will be made to :- :
analyze this sighting. analyze this sighting.
$a$
Sincerely,
'
MASTON M. JACKS
Major, USAF
Public Information Division
Office of Information
Inclosure
Messrs and
San Francisco, California
.

this is the purpose letter.
My friend and I have just completed a knapsack
trip tos some of the remote lakes and streams of the Yosemite wilder-
ness area in Northern California. Cn Saturday, August 15 we were
camped on southeast side of Benson Lake, 8:15 a.m. that
day we itting by the edge of the lake, which was very calm
and quie heard a brief sound rushing air. ke
were both for the branches of the trees did not move.
"hen we again hear nd a few seconds later, we both looked
up and I saw three objects moving from east to west at an incredible
speed--so fast that before my friend could locate them, they had
disappeared behind a cloud in the west.
The sound which we both heard was that of air friction only,
certainly not of jet propulsion also assume that the
altitude of the objects above us could not have been great because
the objects e still visible when the sound reached us. I
estimate the distance between the objects to have been about two
or three diameters. - −
appeared to me t
If you would like any further information about our exne
we e will be glad to
Sincerely Sincer
San Francisco, Calif. San Francisco, Calif.
S.F. Symphony S.F. Symphon and Cpera Orchestras chestras
2Eb-0.80185 Faculty Facult Music usic
2Eb-0.e*OT
Menlo Park, Calif.
Instructor of Mathematics, Woodside High School
Lecturer, Music Stanfor iversity

1
U.S. AIR FORCE TECHNICAL INFORMATION
This questionnaire has been prepared so thar you can give the U.S. Air Force as much
information as possible oncerning the unidentified aerial phenomenon that you havn observed.
Please try to answer questions as you possibly can. The information that you give wili
be used for research purposes. Your name will not be used in connection with any statements,
conclusions, or publications without your permission. We request this personal information so
that if it is deemed necessary, we may contact you for further details.
1. When did you see the object? Time of day: S 15
Hour Minutes
15. 15. Al66sT 1964 Al665T 1964 (Circle One): A.A A.A or P.M. /
Day Month Month or P.M. 1
Year
3. Time Zone:
(Circle One): a. Eastern (Circle One): a. a. Daylight Saving
b. Central Standard
c. Mountain
d. Pacific
e. Other
4. where were you when you sow object? YESEMIT
NESSY Dam,
Nearest Postal Address City or Town Srate ar Counry
.How long was object in si Total Duration)
Hours Minutes Seconds
a. Certain c. Not very sure
.Fairly certain d. Just a guess
5.1 How was time in sight determined? 6D
5.2 Was object in sight continuously? w7 Yes No--
6. What was the condition of the sky? 6. What was the condition of the sky?
DAY NIGHT
(6 Bright a. a. Bright
Cloudy b.
7.IF you saw the object during DAYLIGHT, where was the SUN located as you locked at the okject? 7.IF you sow the object during DAYLIGHT, where was the SUN located as you looked at the ok joct?
(Circle One): a. In front of you d. To your left
b. In bock of you e. Overheac
c. To your right f. Don't remember
FTD OCT 62 164 FORM
Thie form oupereedes FTD 164, Jul 61, which ie cbsciete.

Page 2
8. IF you saw the object at NIGHT, what did you notice concerning the STARS and MOON?
8.1 STARS (Circle One): 8.2 MOON (Circle One):
a. None a. Bright moonlight
b. A fow b. Dull moonlight
c. Many C. No moonlight - pitch dark
d. Don't romember Don't remember
.What w r conditions at the time you saw the object?
CLOUDS (Circle One): WEATHER (Circl One):
a. Clear sky a. Dry
b. Hazy Fog, mist, or light rain
e. Scattered clouds c. Moderate or heavy rain
Thick or heavy clouds d. Snow
•. Don't remember
The object appeared: (Circle One): The object appeared: (Circle One):
.Solid d. As a light
.Transporent .Don't remember
c. Vapor
I it appeared as alight was it brighter than the brightest starsCirclOn):
. Brighter c. About the same
. Dimmer d. Don't know
11.1 Compare brightness to some common object:
-
The edges of the object were:
(Circle One): a. Fuzzy or blurred . Other -
b: Like a bright star
c.Shorply outlined c. Shorplyoutlined
Don't remember d. Don't remember
Did the object: (Circle One for each question)
a. Appear to stand still at any time? Appear to stand still at any time? Yes No No Don't know Don't know
b. Suddenly speed up and rush away at any time? Yes No No Don't know
c. Break up into parts or explode? c. Break up into parts or explode? Yes No No Don't know Don' know
dGive off smoke? d. Give off smoke? Yes No Don't know 2 COo" GSOW o TY 36
•. Change brightness? Yes Don't know
f. Change shape? Yes 22 Don't know
g. Flash or flicker? Yes Don't know
h. Disappear and reappear? Yes Don't know

Page 3
14. Did the object disappear while you were watching it? if so, how?
NISAPP D T AE CLELDS INTHECLEST
1.Did the object move behind something at any time, particularly a cloud?
(Circle One): (Yes No Don't Know. IF you answered YES, then tell what
it moved behind: AS ABCLE)
Did the objeet move in front of something at any time, particulariy a cloud?
(Circle One): Yes No Don't Know. IF you answered YEs, then teii what
in front of: _
13. We wish to know the angular size. Hold a match stick at arm's length in line with a known object and nore how
much of the object is covered by the head of the match. if you had perforned this experiment or the time of the
sighting, how much of the object would have been sovered by the match head?
THe L022LD, I E ALEBEEN
MATCA HEAD on
TTHE SAME S/PCA5 In A o
Aa
1. Draw a picture that will show the shape of the object or objects. Label and include in your sketch any detcis
of the object that you saw such as wings, protrusions, etc., and aspecially exhaust trails cr vapcr traiis. of the object that you saw such as wings, protrusions, etc., and especially exhaust trai!s cr vapcr traiis.
Place an arrow beside the drawing to show the direction the object was moving. Place an arrow beside the drawing to show the direction the object was moving. PMLOMI
ALTHCUGH THEIR FLIGHT
C LUAS PARALLEL, THE FERLAED LUAS PARHLLEL, THE FERLAED
C SPEED LnSCnEbLAC SPEEDLS CnEELN ×
A A
LOHENCNE ADLANCED,THE
A
1 C7HE1762 SPELDED CD
L T SAU Mi PRCTRUSICN

Pago 4
20. Do you think you can estimate the speed of the object?
(Circle One) Yes No
IF you answered YES, then what speed would you estimate? .
2Do you think you can estimate how far away from you the objact was?
(Circle One) Yos No
FT
Where were you located when you saw the object? 23.Were you (Circle Cne)
(Circle One):
a. In the business secticn of a city?
o. I Inside a building b. in the residential section of a city?
b. In a car c. In open countryside?
e. Outdoors d. Near an airfield?
d. In an airpiane (type) 8. Flying over a city?
.. At sea f. Flying over open country?
{. Other a.
24.1 What direction were you moving? (Circie One) II
a. North c. East . South g. West
b. Northeast d. Southeast f. Southwest h. Northwest
24.2 How fast were you moving? — __miles per hour.
24.3 Did you stop at any time while you were looking at the object?
(Circle One) Yos No
25. Did you observe the object through any of the following? -
a. Eyeglasses Yos No e. Binoculars Yes No
b. Sun glasses b. Sun glasses Yes Yes No No f. t. Telescope Telescope
c. c. Windshield Yes No (No g. Theodolite Theodolite Yes
d. d. Window glass Window glass Yes No No h. Other _ Other
2In order that you can give as clear a picture as possible of what you saw, describe in your own wor commen
object or objects which, when placed up in the sky, would give the same appearance as the object which you r object or objects which, when placed up in the sky, would give the same appearance as the ob
SPHERES,SLCHA5 BALLCCAS SPHERESSLCHAT BALLECAS
MA
11

high the object was above the horizon (skyline) when you first saw it. Place a "g"sn the sume curved line to
show how high the object was above the horizon (skyline) when you last saw it. Place an "" on the compass
when you first saw it. Place a "B" on the compass where you last saw the abject.
90°
NT
30 B 1
B
15 15 6 M
36
2. Draw a picture that will show the motion that the object or objects made. Place an "A inning of the
path, a "B" at the ond of the path, and show any changes in directiori during the couirse.
C
C
29. IF there was MORE THAN ONE object, then how many were there?
Draw a picture of how they were arranged, and put an arrow to show the direction that thay were traveling.
THEY FLEUAPACALLEL CUURSE BOT
A CCNSTANTLY ADTOSTILG FOOWARD SPGEA
.
C
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