Form: 97 Research Report
Date: Tue, 27 Dec 2005 16:48:32 +0000 (GMT)
From: daniel wilson <>
Subject: Summary of Observations of Aerial Phenomena
New Mexico Area, Dec 1949 to May 1950
To: Francis Ridge <>

(Note: This page was updated 14 Oct 2007 to include text for search engine purposes. See bottom of this report. - Fran Ridge)

For 18 months over 1949, 1950, unidentified flying objects had been sighted over New Mexico. They were green balls of light, generally flying horizontally in complete silence, and they were often spotted near sensitive military installation, including nuclear installations. In February and October 1949, two confidential conferences between scientists, intelligence personal, were held at Los Alamos, New Mexico, to evaluate what the "green fireballs" were. The conclusion was that they were not explainable in terms of common phenomenon and that scientific study must be continued. The document underneath indicates it.

"Representatives of the following organizations were present at these meetings: Fourth Army, Armed Forces Special Weapons Project, University of New Mexico, Federal Bureau of Investigations, U.S. Atomic Energy Commission, University of California, U.S Air Force Scientific Advisory Board, Geophysical Research Division air Material Command USAF, and the Office of Special Investigation (IG) USAF. A logical explanation was not proffered with respect of the origin of the green fireballs. It was, however, generally concluded that the phenomena existed and that they should be studied scientifically until these occurrences have been satisfactorily explained. Further, that the continued occurrence of unexplained phenomena of this nature in the vicinity of sensitive installations is cause for concerns."

"This summary of observation of aerial phenomena has been prepared for the purpose of re-emphasizing and reiterating 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 military and government installations."
Page ID (PID) : NARA-PBB91-477 - 479
Collection : NARA Blue Book Microfilm
Roll Description : Project Blue Book Roll 91

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25 May 1950

File No. (24-8)-28

SUBJECT: Summary of observation of Aerial Phenomenon in the New
Mexico Area, December 1948-May 1950
TO: Brigadier General Joseph F. Carroll
Director of Special Investigations
Headquarters USAF
Wahington 25, DC

1. 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 observation should be
undertaken. The organization and physical localisation of units of this Dis-
trict were most suitable for collecting these data, therefore, since
December 1948, this District has assumed the responsibility 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 Material Command, USAF, in accordance with Air Intelligence
Requirements No. 4, and to other interested military and government

2. There is attached, as a part of this summary, a 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 those 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-
pilation sets forth the most important characteristics with respect to
each observation and evaluates each sighting into one of the three classifi-
cations, (1) green fireball phenomenon, (2) disc or variation, and (3) probably meteoric.

3. There is also attached an analysis of the green fireball
occurences in this area by Dr. Lincolm LaPaz. Dr. LaPaz is the

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