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The FBI's 62-HQ-83894 case file includes investigative records, eyewitness testimonies, and public reports concerning Unidentified Flying Objects and flying discs documented between June 1947 and July 1968. The records include high-profile incident accounts, photographic evidence from sites like Oak Ridge, TN, and technical proposals regarding potential propulsion systems. Additional topics include convention programs, researcher accounts, and extensive media coverage from the period. This file is partially posted on FBI vault with more redactions and some pages missing. Included here is the complete case file with several newly declassified pages and only minor redactions.
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Auto-extracted from the original scan with OCR · may contain extraction artifacts. The source document above is authoritative.
1 6-[uo-29904
gas 246-301
ST
B62-HO-83094
f
from FBI Automatic Declassification
Guide, issued May 24,2007,
FBI - CENTRAL RECORDS CENTER
HQ - HEADQUARTERS
Class / Case # Sub Vol. Serial #
) 0062 83894 6 246
8/11/1274188
MAUNA
RRPOOZIXGU
Office Memorandum + unrrep states GOVERNMENT
TO : De Me tae DATE: August Vitheo
FROM : A. He Belgfon't Les
}
SUBJECT: SUMMARY OFVAERTIAL
PHENOMENA IN NEW MEXICO
MISCELLANEOUS - INFORMATION CONCERNING
PURPOSE
To advise thats (1) OSI has expressed concern in
j connection with the continued appearance of unexplained phen
|described as green fireballs, dises and meteors in the vicinity yy, ¢
of sensitive installations in New Mezico. (2) Dr. Lapaz, Meteor
Ezpert of the University of New Mexico, reported that the phenomena
does not appear to be of meteoric ‘origin. (3) OSI has contracted
with Land-Air Inc., Alamogordo, New Merico, to make scientific
study of the unerplained phenomena. oan
f {
“NATURE OF PHENOMENA
Observations of aerial phenomena occurring within the
vicinity of sensitive installations have been recorded by the
Air Force since December, 1948. The phenomena have been
classified into 3 general types which are identified as follows:
1. Green fireballs, objects moving at high speed
in shapes resembling half moons, circles and discs emitting
green light.
&. Discs, round flat shaped objects or phenomena
moving at fast velocity and emitting a brilliant white light
or reflected light.
3. Meteors, aerial phenomena resembling meteoric
material moving at high velocity and varying in color.
The above phenomena have been reported to vary in
color from brilliant, white to amber, red and green.
Since 1948, approrimately 150 observations of aerial
phenomena referred to above have been recorded in the vicinity
of installations in New Merico. A number of observations have
been reported by different reliable individuals at approrimately
the same time.
RECORDED - ? , (ee Gx
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RESULTS OF AN INQUIRY BY PROFESSOR LINCOLN LA PAZ
Dr. Lapaz, Director, Institute of Meteoritics,
Universtty of New Merico, submitted an analysis of the various
observations on May 23, 1950. He concluded, as a result of
his investigation, that approximately half of the phenomena
recorded were of meteoric origin. The other phenomena
commonly referred to as green fireballs or discs he believed
to be U.S. guided missiles being tested in the neighborhood
of the installations. Dr. LaPaz pointed out that if he were
wrong in interpreting the phenomena as originating with U.S.
guided missiles that a systematic investigation of the obser=
vations should be made immediately. Dr. LaPaz pointed out that
missiles moving with the velocities of the order of those
found for the green fireballs and discs could travel from the
Ural region of the USSR to New Merico in less than 15 minutes.
He suggested that the observations might be of guided missiles
launched from bases in the Urals.
On the basis of the investigations made by Dr. LaPaz
and the Air Force, it was concluded that the occurrence of the
unexplained phenomena in the vicinity of sensitive installations
was @ cause for concern. The Air Force entered into a contract
with LantAir, Incorporated, Alamogordo, New Mexico, for the
purpose of making scientific studies of the green fireballs and
discs. It was pointed out in the summary furnished by OSI on
July 19, 1950, that the unexplained grem fireballs and discs
are still observed in the vicinity of sensitive military and
Gopernment installations.
RESULTS OF AIR FORCE INVESTIGATION
The Air Force together with Land-Air, Incorporated,
have established a number of observation posts in the vicinity
of Vaughn, New Mexico, for the purpose of photographing and
determining the speed, height and nature of the unusual
phenomena referred to as green fireballs and discs. On May 24,
1950, personnel of Land-Air, Incorporated, sighted 8 to 10
objects of aerial phenomena. A 24-hour day watch is being
maintained and has been designated #rroject Twinkle."
CONCLUSIONS
The Albuquerque Office, in a letter dated August 10,
1950, advised that there have been no new developments in connection
with the efforts to ascertain the identity of the strange aerial
phenomena referred to as green fireballs and discs. The Albuquerque
Office advised that Dr. Anthony 0. Mirarchi, Project Engineer,
had been informed of the BureauS jurisdiction relative to espionage
and sabotage and arrangements have been made.so that the Bureau
will be promptly advised in the event additional information relative
to this project indicates any jurisdiction on the part of the
| Bureau.
ACTION
| None. The above is for your inforwation.
September 8, 1950
Director of Special Investigations
The Inspector General
Department of the Air Force
The Pentarcon
Washington, D. C.
From: John Edgar Hoover = Director, Federal Bureau of Investigation
Subject: FLYING SAUCERS
There is attached hereto for your consideration and
attention a copy of a self-explanatory letter dated August 29, 1950,
received by this Bureau from Mr. Walter D. Jones, of 36 King Street East,
Toronto, Ontario, Canada.
For your information, the letter from Hr. Jones has been
acknowledged by this Bureau, and he has been informed his communication
has been referred to your Department.
, APPROPRIATE AGENCIES
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STANDARD FORM NO, 64 é
f
U / Office Mea, waum e UNITED STATES GO.
TO. a 5 aR as aeees DATE: September 27, 1950
“
FROM : MR. Le Le LAUGH. Nv Y-/
}
SUBJECT: Rrra SAUCERS y
*
SAC Cornelius of Philadelphia called at 10345 A.M.
eeday and stated that yesterday evening while two officers of
the Philadelphia Police Department were cruising in their
scout car they saw through the windshield an object descending
slowly to the earth which appeared at first glance to be a
parachute.
1 \ 4
When the officers first noticed the object, it was Ae
tree-top level and was described as being six feet in diameter
It landed ina field near=by and the officers, upon examining Gg
noted that it gave out a purplish glow which was almost a mist. ™
The officers summoned two other police officers, After looking
at the object for some time they attempted to pick it up. ~The
object broke, leaving a slight odorless residue. Over a period
of about 25 minutes which the officers spent watching the object
it completely disintegrated. The officers further-commented thate.
the object was so light that when it hit the field, it did not Paty
even bend the weeds or the grass it fell on.
¥
ah
Mr. Cornelius said that he has called the local offiee “Wy
of the Air Force but the individual with whom he spoke there said@ |
he knew nothing about them and was not aware that his office was We
looking into reports of this type. 5
4
.
«
.Mr, Cornelius desired to know what further action should
be’ taken by him. ee
I told Mr. Cornelius that he was correct in referring
this matter to the local office of OSI and that he should direct
a letter to the Bureau incorporating all available information
concerning the matter and that we here, upon its receipt, in turn
would bring it to the attention of OSI Headquarters.
LLL emer
EPARTMENT OF THE AIR FORCE|
HEADQUARTERS UNITED STATES AIR FORCE
WASHINGTON 25, D. Cc.
DECLASSIFIED
Authority:
t{ter
I
oroper perspective
4 formation
CORDED . 108
te)
aire .
This document ‘contains
information aifecting the
. Sections 799’ c
contents in any mon
Espionc
mn or the revelation
iY
E-) DARD FORM NO, 64 G $
Ofte Memorandum * UNITED STATES GOVERNMENT
TO : THE DIRECTOR DATE: October 9, 1950
FROM : UR. D. M. LADD =
ny E Ladd
| Clegg,
SUBJECT: aS VA ne
oo SAUCERS ~
FLYING DISCS adéen
GREEN FIREBALL 5 Tracy
Harbo
PURPOSE
To advise you of the most recent information lmow to the
Bureau concerning the captioned aerial phenomena.
BACKGROUND
You will recall that on August 23, 1950, I furnished to you a
memorandum regarding Project Twinkle set up by the Department of the
Air Force, with the assistance of Land-Air, Inc., at Vaughn, New Mexico,
for the purpose of obtaining data regarding these unusual aerial phenomena
which had been seen in the vicinity of sensitive installations in New
Mexico. To date the Air Force has not advised us of any new.developnents
in connection with this project. ~~ =
Dr. Anthony 0. Mirarchi, Project Engineer of Project Twinkle, has
been contacted by the Albuquerque Office and arrangements have been made in
order that the Bureau will be advised in the event any information relative
to these phenomena indicates any jurisdiction on the part of the Bureau.
According to Bureau files, an average of approximately three or
four complaints have been received per month from Jue through” Septeiiber .
These complaints were brought to the attention of OSI. A review of Bureau files
does not indicate that there has been any increase in the sightings of these
phenomena during or as a result of the war in Korea.
JURISDICTION FOR INVESTIGATION OF THESE PHENOMENA
You will recall the investigation to obtain information concerning
these aerial phenomena is the jurisdiction of the Department of the Air Force.
The Department of the Air Force is aware of our jurisdiction in matters
relating to espionage, sabotage and internal security, and we have contacted
OSI.and requested them to advise us of any developments in connection with
these phenomena which would be of interest to us as a result of our
jurisdiction.
&
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POSSIBLE ORIGIN OF THESE AERIAL PHENOMENA
The Bureau has been advised in the past by OSI that many of the
sightings reported to them were determined by investigation to have been
of weather balloons, falling stars, meteorological phenomena and other air-—borne
objects.
INFORMATION OBTAINED BY BUREAU LIAISON FROM OSI, WASHINGTON, D. C.
Re THe CAPTIONED MATTERS ON OCTOBER FP 1950.
Bureau liaison determined on the morning of October 9, 1950 from
OSI headquarters that the investigations of these aerial phenomena are being
yfhandled by OSI, Wright Field, Ohio. Their investigation of these
phenomena fails to indicate that the sightings involved space ships or
missiles from any other planet or country.
According to OSI, the complaints received by them have failed to
indicate any definite pattern of activity. OSI further advised they are closely
following the investigation of the captioned matters, and they will advise this
Bureau of any matters of interest.
ACTION
None. The above is for your information.
pwanenebiil i a
Office Memorandum ¢ UNITED STATES GOVERNMENT
TO : DIRECTOR, FBI DATE: October 2, 1950
ae : SAC, PHILADELPHIA ATTENTION: MR. LEO LAUGHLIN
s
ECT: FLYING DISC REPORTED AT
PHILADELPHIA ON 9/26/50
During the late-évéering Hours~or"Séptember 26, 1950, two Phila-
delphia police officers observed a peculiar phenomenon on Vare
Boulevard near 26th Street when they saw a round object about
six feet in circumference slowly float down to the ground.
The object had the appearance of a parachute and landed in a field,
it being so light it did not even depress the weeds in the field.
The object was lavender in color, described by the officers as
dewy, sort of like soap suds, and evaporating within fifteen or
twenty minutes after it landed. When touched by the officers, the
substance composing the object disappeared, leaving nothing but a
slight sticky substance.
This matter was reported to this office by the Philadelphia
Police and for that matter, was subsequently carried in the a
Philadelphia press as "Flying Saucer Just Dissolves". a
Mr. LAUGHLIN of the Bureau was telephonically advised of the above
by this office and issued instructions that the matter should be
referred to Air Force Intelligence for handling and any investigation.
Accordingly, Major WATTS of the Philadelphia Office of OSI was
telephonically advised of the above and no further action was taken
by this office.
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} INDEXED - 125 ICT 131
FRDERAL BUREAU OF INVESTIGATION
U STATES DEPARTMENT OF JUSTICE
To: COMMUNICATIONS SECTION.
COTORER 13, 1950 URGENT
Transmit the following message to: SAC, 108 ANGELES
Ozma SAUCERS. YOU ANE INSTRUCTED TO DISCREETLY
DETERMINE THROUOHAPPROPRIATE RELIABLE SOURCES OF YOUR OFFICE
WHETHER FRAMESCULLY, AUTHOR OF THE BOOK QUOTE BEHIND THE FLYING
SAUCERS UNQUOPE IS IDENTICAL TO THE FRANK SCULLY WHO HAS BEEN
ACTIVELY ENCAGED IN COMMUNIST ACTIVITIES SINCE THE IATE NINSTEEN
THIRTIES IN THE TERRITORY OF YOUR OFFICE.
| HOOVER
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DEPARTMENT OF THE AIR FORCE
HEADQUARTERS UNITED STATES AIR FORCE
WASHINGTON
DECLASSIFIED
- THE INBPECTOX GENERAL UBAS
Authority: P?TH CISTRICT OFFICE OF SPECIAL INVESTIGATIONS
NND 90986 KIATLAND AIP FORCE BAGE NEW MEXICO
File No: (24-8)-28
SUBJECT: Summary of Observations of\Aerial Phenomena in the New
Mexico Area, December 1948 = May 1950
Brigadier General Joseph F, Carroll
Director of Special Investigations
Headquarters USAF
Washington 25, D.C,
le In a liaison meeting with other military and government intel-
ligence and investigative agencies in December 1948, it was determined
that the frequency of unexplained aerial phenomena in the New Mexico area
was such that an organized plan of reporting these observations should be
undertaken. The organization and physical location of wits of this Dis-
trict were most suitable for collecting these data, therefore, since
December 1948, this District has assumed the responsibil ity for collect-
ing and reporting basic information with respect to aerial phenomena
occurring in this general area, These reports have been distributed to
the Air Materiel Command, USAF, in accordance with Air Intelligence
Requirements No, 4, and to other interested military and government
AZENCICS »
2. There is attached, as a part of this sumary, 4 compilation of
aerial phenomena sightings that have occurred mostly in the New Mexico
area and have been reported by this District Office subsequent to
December 1948, This compilation of sightings is not a complete record
of all reported observations, but includes only these in which sufficient
information was available to justify their inclusion, The observers of
these phenomena include scientists, Special Agents of the Office of
Special Investigations (IG) USAF, airline pilots, military pilots, Los
Alamos Security Inspectors, military personnel, and many other persons
of various occupations whose reliability is not questioned. This com-—
ypilation sets forth the most important characteristics with respect to
‘gach observation and evaluates each sighting into one of three classifi-~
Veations, (1) green fireball phenomenon, (2) disc or variation, and (3)
robably metooric. =: >
r ee
Pd
3 There is also a WDES? an ol aware of -the ereen fireball
occurrences in this area made by Dr. LinolOlaPar! Dr. LaPaz is th
s!
File No: (24=8)-28
Subj: Summary of Observations of Aerial Phenomena in
the New Mexico Area, December 1946 = May 1950 25 May 1950
Director of the Institute of Meteoritics and Head of the Department of
Mathematics and Astronomy at the University of New Uoxico, He was Ro-
search Mathematician at the New Mexico Proving Grounds under an OSE
appointment in 1943 and 1944, and Technical Director of the Operations
Analysis Section, Headquarters, Second Air Force, 1944-45, Since 1948,
Dr, LaPaz has served on a voluntary basis as consultant for this Dis-
trict in connection with the green fireball invostigations.e
4e On 17 February 1949 and again on 14 October 1949, conferences
were held at Los Alamos, New Mexico, for the purpose of discussing the
green fireball phenomena, Representatives of the following organizations
were present at these meetings: Fourth Army, Armed Forces Special Wea-
pons Project, University of New Moxico, Federal Bureau of Investisation,
U, S, Atomic Energy Comission, University of California, U, 5. Air Force
Scientific Advisory Board, Geophysical Research Division Air Materiel
Command USAF, and the Office of Special Investigations (IG) USAF. A
logical explenation was not proffered with respect to the origin of the
green fireballs, It was, however, generally coneluded that the pheno}
mona existed and that they should be studied scientifically wtil these
occurrences have been satisfactorily expleined. Further, that the
continued occurrence of unexplained phenomena of this nature in the
vicinity of sensitive installations is cause for concern.
5. ‘The Geophysical Rescarch Division, Air Materiol Command,
Cambridge, Massachusetts, has recently let a contract to Land-Air, Inc.,
Holloman AFB, Alamogordo, New Mexico, for a limited scientific study of
green fireballs, The results of this sciontific approach to the problem
will undoubtedly be of great value in determining tho origin of these
phenomena.
6. This summary of observations of aerial phenomena has been
prepared for the purpose of re-emphasizing and reiternting the fact
that phenomena have continuously occurred in the New Mexico skies
during the past 18 months and are continuing to occur, and, secondly,
that these phenomena are occurring in the vicinity of sensitive mili-=
tary and government installations,
i ee
4 Inels DOY LB /REES
1. Summary of Sightings Lt nig USAF
2, Photo of Sighting No, 175 District Commander
w/comments
3, Ltr fr Dr, laPaz to Lt Col
Rees, dtd 23 May 50
4. Graph indicating meximums
File No: (24=8)-28
Subj: Summary of Observations of Aerial Phenomena in
the New Mexico Area, December 194€ - May 1950 25 May 1950
DISTRIBUTION :
evs, Director of Special Investigations, Headquarters USAF
joey; 66, hir Materiel: Commend; iiricht-Patterson -AEB—Ohio
ATT:—Direetor-of-Techtcal— intettigence
1 cy, CG, Special Weapons Command, Kirtland AFB, New Mexico
1 cy, CG, Armed Services Special Weapons Project, Sandia Base,
New Mexico, ATIN: d=2
1-ey, CG, Headquarters;—ourthArmy-,+.SemHouston,tTexas
APRA — AC OES, Cae
1 cy, CO, Holloman AFB, New Mexico
1cy,—C0, ,~LirTeres Cambridge Research _Laberetories,Cambridge,thss,
1 cy, Director, Security Division, U. S, Atomic Energy Commission,
Los Alamos, New Mexico, ATTN: Mr. B. 0. Yells
1 cy, Federal Bureau of Investigation, Hl Paso, Texas
1 cy, Federal Bureau of Investigation, Albuquerque, New Nexico
1_ey-; Airforce Scientifie Advisory—oard, Pentegon—buitding
ATTN._Dr,—Jesepi Kaplan.
t-ey;—Research—ané Development—Beard, Fen tegon—Buiiding
AT?P-+—Dyp,—H,—E,,—_Landsberr;—txecutive Director, Comnittes—on
Geophysics—and Geography
Liey, File
4
THE UNIVERSITY OF NEW MEXICO
ALBUQUERQUE
INSTITUTE OF METEORITICS
May 23, 1950
To: Lt. Colonel Doyle Rees, Commanding Officer
17th District, 0. S. I.
From: Lineoln LaPaz, Director
Institute of Heteoritics
Subject: Anomalous Luminous Phenomena (Seventh Report
Le In the second report of this series, dated 1948, December 20, the
writer listed ten significant differences between the brizht. green horizon-
tally-moving fireballs observed in the interval 1948, December 5-20, and
typical meteors. These differences were the following:
(1) The horizontal nature of the paths of most of the December
fireballs is most unusual, Cenuine meteors are rarely observed to move
in horizontal paths.
(2) Again the very low height of the December fireball discussed
in section 2 above sets it off in sharp contrast from the cenvine
meteors for which heights of the order of 40 or more miles are nor~
mally observed,
(3) The velocity determined for the fireball of December 12 is
much less than the velocities determined from typical meteors (and
yet is considerably greater than the speeds of the V-2 Rockets or
jet planes or of conventional flares).
(4) In the case of meteorites that penetrate to as low levels
as that determined for the fireball of December 1lé, the observec lu-
minous phenomena are always accompanied by very violent noises, No
noises whatever have been observed in connection with the various
December fireballs so far investigated. (Note added on 1950, May ©d:
Possible exceptions to the noiselessness of green fireballs are the
incidents of 1949, January 30, and 1949, December 7)
(5) Genuine meteors soared show remarkable variations in
brightness, beginning as Tine thin hair lines, which are scarcely
visible to the observer, and then brightening up to flash out near
the end of their paths. In the case of the December fireballs most
of the observers have reported that the green balls appeared almost
instantly at their full brightmess,
Boyle Ree
Luminous
Lt, Colonel
Anomalous
(6) In the case of
in
ward ell
in the case of
tors show that
come from the north
points of
the
in
(7) The three
show @ curious
none of
fireballs, such
Bian lige en exeued
Quadrant
August » Y near
these meteor
aS
et
GY
ercen color
observed i
peculier
alts in
the wave
r B52 ae
duration ¢
n fireballs
there is
helf
groups
association
showers
Giese
Meat
shower of carly
ord
- Pare @
r ‘
<r + Rannrt
YOVenth “Aepory,
Ercen
& very pronounced tenden
f of the
Sint s
1 inous
: el) mreryial shor
normally produ
cbibatalcidaiaas
1¢e Serena
recently o xample,
£
OL
Monnig appeared neer the maximun
j Lis Eebulloue
h's
Oy ChuUsing
fire balls is rarcly
dhex
shoratory oes
stimate
are consid
Lary Va
invariably RepOr Gas
(10) For nono
dust cloud been
havior noted in casc
that penctrate to the
very
fireballs
contres%
fircbal
levels
sis
meteoric
lov
ocserved,
accompany i
Cie Eions
all green 1 fi reball reports
orcpered, many ad-
at
pee Ta
listed
roported
To: Lt. Colonel Doyle = ~ Page 3
Subj: Anomalous Luminous
Srenomena (Seventh Report) May 23, 1950
to move horizontally. However, a strictly ve infall is also very
rarely observed in the case of genuine meteor
3.. An analysis just completed of the
fireballs so far observed permits us to add an ith eae:
differences given in paragraph 1 above, The graph of frequency
local time which accompanies the present report shows that the
frequency of sighting of preen Srey er Le (occurring at approxim:
2030) coincides in time with ne , .e@ frequency maximum for
meteors (occurring at approxim tely 0300) nor the frequency maxim
meteorite falls (ocecurrin
4, Inspection of the graph referred to in
show that most of the green fireballs have been sirh
val extending from about 5 p.m. to 11 pem. (
might be even more pronounced if it were poss
pada maximum, around 2 aeMe (MST), all inary meteors
mistakenly identified E i
tion has hecarsed is strongly sugges’
of the secondary maximum of the green
early mornings maximum of the ordinary
5. Some significan may attach to the fact that the time interval
alluded to in paragraph 4 nds from abo f at in the Ural
region of the USSR. Since mi viith ve ities of the order
those found for the green fire sf which real path determinations
have been possible would trave m th uthe als to New Mexico in
less than 15 minutes, a pretatic £ the concentration of
sightings referred to <) paragraph 4 . that the green fircballs result
from guided missiles launched i c
hours before cloudiness due
storms can interfere with
the Optical Trajectory Section
6. There is also a pronowneced concentration of een fireball
incidents on the four “ha Razak Saturday, Sunday, } Tondex , almost
all of the most widelv srved incidents having occurred on Saturday
or Sunday.
7 It is a curious and
has been a distinct decline
during the last two months,
ing saucer" incidents in this
Although I have recently rc ceived
fic Advisory Board a letter conta
of any tits BS, experin
bje
Colonel
Anomalous
mn | i
To: Lt.
Subj:
ree
r 20,
paras
irae)
et
De ®
e haertoraue
pe low
to settinr
have
by observers '
re eordinary
very
port
erin
.
a
well
problem:
down
Care
rae
particul aes
Pi
950 ;
g50,
concernin
projec
DOSees
evid
I have co
Jenece now weet
ing a fireball proje
ga cely: that
Those of the
miusual, bus
other characte
are U, 5
the sensitive
interpretation of
answer to a questi
conference on
end I doubt
one oes
wrong in interpretinre
certainly intensive,
delaved
should
year.
now be
Recent
imperative necessity
al green fireballs,
proving that ti
a
oT aA
if such en
would
recontiend
in cherge oi
compelled
recommendation
conclu-
ace
Ores s
o: Lt. Colonel Doyle Rees - Page 6
ubj: Anomalous Luminous *henomena Seventh
Dr, L. A. Maming, of Stanford, d D Hillman be placed in
charge of the radar investication; and alt that Dr. ‘iiiliem
Crozicr, of the New Mexico School of Mines » placed in charge of
dust collection and identificstion On the basis of marly intensive
rf
field surveys, I do not anticipa
any pecover en, but in case such
i4 should be carried out on the
Te
|
with you and Major Oder t month.
Ss
9, \lthouch the above paracraphs
recommendations con ed them are the
sider at the presene
offer made at the end oi
aw ~
to serve, if needed, as consultant t
sugeested in Major Oder's letter to me und
with the stipulation, however, that mr serv
rather than on the S40 per day contract spe . ted ij ioe
“a
i sg
weteveee Meteorites.
os Meteors it ae
*
3
GREEN “FIREBALL”
MAXIMUM
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TIME OF SIGHTINGS
Sighting No, 175
Photograph of Unknown Aerial Phenomena taken at Datil,
New Mexico by Cpl Lertis E, Stanfield, Holloman Air Force
Base, New liexico on 24 and 25 Feb 1950, An analysis of
the above photograph was made by Dr, Lincoln LaPaz, Head
of the Institute of Metecritics, University of New Mexico,
Albuquerque, New Mexico, who reached the following con-
clusions:
a. The angular diameter of the perfectly round
luminous object Stanfield observed was approx
imately 1/4 of a degree,
be The angular velocity of the object in the sky
Was greater than half a degree per minute.
Dr, LaPaz stated that on the basis of the results (a)
and (b) above, the object seen by Stanfield was not the
moon (for the angular diameter is too small), it was not
Venus or any other planet (for the angular diameter was
too large), and it was not a bright fixed star slightly:
out of focus (for the observed rate of motion is double
that due to the diurnal rotation of the earth),
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summary of 5
Summary of Sightings of Unimowm Aerial Phenomena, 17th District OSI ea)
&
en ae eteerheresdsnctetepememntea Sceecetagineereteernarsteremnaaeanta
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|
Reliability
f Observers
wget
os
as
:
:
|
pparent
Direction
of Flight
Horizontal
to Vertical
| Observation
Observers
General
jiArea of
Occurrence
Apparent
Altitude
Course
Duration of
Manner of
Disappear-
ance
iSiiver rene | iene Iciger lecom b-29 i300 - 600 Faded from
| i lor sa ito a city imph iwiew
_-
|
i
i msace fblock
oe als si engaro® aiaira: aA: a oe
50 Apr 2215/1 he [Albuqueraue , 12 to [50° above iBlue i one sione ound Tenth of e seconts
{ F 90 E der
ee et Mexico _ ee 10r orizon | _____._fBF een — epee _—— oe degrees
1
t
i
ua
: : 4 :
59 {3 ly 2143/1 iB | Los Alenos, |S to N I10° - 15° IBright lho jive | Very fast
[New | ‘exico above white } Isecs | i jup to
i a ee Le 1,000 ae
i : . F
i
;
iLos Alamos, is 4o i {30° — 15° (hite S- 7| Hone ! tLarce = ery fast
New Mexico | above i secs isimilar
A zon ; i Jeach ito size
i ane ae air-
plane
| i ; landing
BON Re eae ee -. <=. a |_| i
F i i
i
i
horizon | _jiight |
psec ee
sos Alemos, |ESE to 10° - 15°;
New Mexi Wi atoxe ;
j horizon i i ec
1€ 2126-base-iSeme speed
iball dia- jas aircraft!
lichts. i
| 2140- i
slightly |
larger
than
firebox
lights
i
| i mond
|
i
67 (8 May
09501 4
Number of
Observers
| Rel
a
'1100;
ility|
iab
of Observers }
Unie
i
General
iArea of
Occurrence
{Camp Hood,
Texas
Los Alamos,
Hew Mezcico
[Camp Hood,
Texas
Camp hood,
Texas
Tucson,
Arizone
1
irection
of Flicht
itude
Di
H
be
ae
lel
g 4
forizonta
to Vertical
Apparent
i Apparent
Atterna~|Tone, jtone Round
iW and ¥ App 1200"
iting
dropping i ae
to 440! pinkish i
i
|
|
i to green;
j
i 4 5 oe
His See ane ren eenenemeet Ber eistiogiert rien w ore te scene Pe er
I i
4
5° above flas going oe
horizon pera hs an i
Vrace None Round
i+ doller Very
jdiminish- :
jing to
jshort
juarter
__.isize
omens ie
Pep 1/8 ee high
ize of rate of
jfeld moon {speed
t
white
agataurtneee 6?
sreenish sec
white
een: inane
r Fig
Reddish {None
ereenish}
white |
jHorizontal tthite :
then rapid ! jlic
ae
None jDia-
i
Dies
imond
ifone
£000 +o
20,000
tHetal-
5 mils
width in
40 mins
jhoriz ee om
Savarese 20
mils in
pe secs
2 mils
width
40=75" in
in dia
‘Motionless
:so Paster
jeLimb at icircuejmeter
i i48° angle | beef JOP
Disappear-
Disappeared
demez Ifts.
Dimmed and
went out
Climbed at
45° engle
until out of
sight
(1)
4.
tae
euished
oeded
vay Ty
Taded from
Vanished
anished as
tho e
cits jyanpbbeeciensas sajenengars: + oe-nenesqaneeenentaeeneeams cenesiserie citesnmatens =
=e
EG
v
|
750=1000
§00-1000
LPH
i
eteereer ccs eran Seer erp cb-naehheeesepenes +s dneaanicn teat
a
diemete
sobrenmnsn
i uoTqwa.esqg |
jo moFseanc |
-1/21i
p Ss il 2d
eil
a
:
or
= ie
shin
en
che
fore ve.
?
i Dlue
Lgre
ioriZone
TeoTgse, 04!
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as.nog)
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3° or 4°
norizon |
erveraty
pie
aa
{
i
i
i
svsenernses serene nents enprrinetereetent
7OQ00'
horizon
i
nteenenretetilesreeesantnemeensps—sremenabbinst -oTHsSs saesstaaneeermmennrenea tenets:
qustl a v0
UOT] 0917 ¢ |
quoreddy ji
W to NE
mL:
|
|
|
Alamorordo
ay cesenseesteisseercetremets tesserae: (meee
B to N
i
i
99UIOLAN00 |
jo vory ||
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|
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lemos,
fh
£
Los
Los Alamos,
New Mexico
da SY
Los Alamos,
New Mexico
Tucson,
jArizone
Tucson,
Arizona
araacart teanila-eaess)rses ste penueererndeepbecentnsane ann
Unk
a cice in Fabeeraeaniasentan ata canhigseete
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es . Ps
. | Le
Reco. ie
‘
v App
700
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11 Jun
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srt
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43
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oo
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a
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im
a
8
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Q
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re
a
oa
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ay
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6
5
Ge
[2
“
iit
ce
c
&o
Ta]
baa
fea i
oO
a
(3) |
i
;
*aded from
Went behind
building
ver a hill
Disappeared
view
e
jin distance
iturning off
‘Such as
i flashlight
,000 mph
eecmmapeaye 2
i
140° in
2 mbs.
Relatively
2
or faster
lightly
larger
than
ibrishtest |
star.
size of
iplane
14" dia-
meter at
10,000!
jaltitude _
Puice as
evening
ee
v=
shaped jsmal] air-jslow
Circle Appeared
Round
Bullet
S|
=
|
:
ye
|
i
TBOTRZO A 0 |
oe eeg|
sc
epngtaty!
cleat |
SUIT a FO) | A fed.
worq00a1q]| ak Sl
serene PPP PP
rao 6 SH id
teel
ar
it
t Lorizon=
30° fron
i
peree el
horizon
i
i
ue, il 4
goto t999 |
jo vou]
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|
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c
et
3
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Pu
ct
a
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o
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i
G4
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a
5
%
ol
wm
G4
ie)
nw
(3)
‘
|
‘like light
t
j
i
t
Kent out
eae een
Gradually
ifaded out
+ secs!aded out
=
:to cover
y fast
|
estimate
|
|
Unable to
;
pon
|
Ver
3
i
'
size even-
a
=e of
levening
!
Tennis
ball
Evening
w/teilistar or
Round
1/tail
Round
u/sail
Round
pinameiicnesnayeraia tarts sept eters) times sneer tee
voTqearesag||
qo wor qeang’)
etd
10
a esrind Msi
edb, Lkasggt ea er unLenetannem Syageeten seeae nigeesen nee iaiuae. Cemnert cemnmute tore
to tail
Fredom—
white
i
!
i
t los-j inately
j
i Teotqae j 09 |
Te} u0z T4077 |
astnog |;
:
Le
et nareeeee cee te caeeeeeeeeten tent ot ediees
Straight
ine alti-
fl
apna taty|
quareddy |
.
QUSTT a Jo;
iSebaata|
30°
above
horizon
30°
labove
horizon
above
jhorizon
4465 can
to 5
ar
i
tee aie
i i
i
sh coetsuc |
Jo very)
Tesetey |
Texas
filleen,
Rilleen
eeefacsneateneaenen
jgtanzsqg
ROTI AST Loe |
F “ga ALOSG |
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ws
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aa]
re
42
o
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tr
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0
55
:
a
uration of |
a
Reliabilit:
Observers
rain or
rail
Number of
Observation |
llshape
rs
Apparent
Direction
Horizontal
to Vertical
Sound
q
{Round [Digger than!
a Mexico fal ling
3°28" to ws eoing Reddish z | m5
9°40" jup then felt lue & i i
above Hin almost igreen i
Unik Las Cruces,
pom Mexico
i
i
t
i
4
os |
Unk jAlenogordo, Vertical {2°20" to/|Straight
New Mexico 7°35" ivertical
above [flight islight
i f }
horizon ivertical Ej i : |
i i Gna ‘ | __-[Girection Re ast & f ;
i
thorizon } ireddish {| i
eae:
:
; i
Unk jAlamogordo, jE to W {204" to [10° off binds : if iLarce as
iNew Mexico 12°7" jvertical | : i jauto spot ,
above | . flight at
horizon | | ; iste: 8
if LOSER
[6 Aug [2015/1 Unk |Alenozordo, Istrateht Whitish
Round [twice size Extremely
an Mexico iflight app yellow
normal fast -
120° verti- {(red falling ‘twice as
i foal dec- trail) |
i line
me | : |
oteettee cee seeeeentoren cere nme cnegenine Sattemenes ccoeeeeits geticenenenettoe tate att
sbar fast as
falling
i
i
i
i
i
ee Be cen eee eee Fae See Se Mn! MONON
-
Slightly
ifaster than
oe aaeclea sin Tanai cutee tate
clenched
fist
of finger
Inail at
nat ens Fa =
i
Pip of
H thumb at
iarm's
lHoad size
NO 6 0
|
Round
aS ’
i
Sini- H
ilar to
icomet. :
ari taasachipeeeanee = sate
i
i
:
i
s |
i
i
i
1 weal
i
t
i
i
Blue
ow
to
angle
headed
onw
Tequoztao07
TBOTZAIA 04
esanon
ong sl
ar
a
is)
°
+t
%
o
>
curve
earth
ie
ove
orzizon |
50° ance {50°
6
ab
1orizon
horizon
above
horizon
le
headed
4
et
QUSTL a FO
WoT q00aT CH
quoreddy|
¥
: = i oe ie
i
par reams has nina aetrs meneesens en:
to 8
i
eareeae
N
bad
xico
90U9IINI9Q f
ae NOG
[Tezeua ni
lie
Mes-ico
ibuquerque,
mE
i
:
:
+
|
ae TR Teele seer
lamogordo,
ew! Mexico
New Mexico
Base, Texas
CW
By
White Sands,
iN
Alamogordo,
ikilleen
New }
mmx bs
Context
This is one of 87 FBI records in the declassified archive, and one of 30 cases describing a disc/disk. It was published in Release 01 (5/8).
Evidence tiers describe the type of record (sensor capture vs. written report vs.
administrative file) · not a claim about its conclusions. UFO Papers reports only what the documents state.
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