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Official reports, hearing transcripts, case files and releases: the paper behind the cases. 2,872 documents, 2,610 mirrored with their text, 53,529 pages indexed, so a search reads inside them and lands on the page.

New in the library The PURSUE files The Department of War's UAP release, mirrored in full: the videos, recordings and images, each beside its case file.

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“Project Grudge”

Documents 63 Scans in the stories 4

Documents matching “Project Grudge”63 records · page 1

aaro historical record report volume 1 2024 Report

The Black Vault· 64 pages · Cited by the stories · 2 stories
- p. 14 …Project GRUDGE was the name given to two related, but different organizations; the second—reorganized Project GRUDGE—was established about…
- p. 16 15 Project GRUDGE (Original Organization) (February–December 1949) Background: Project SIGN was renamed Project GRUDGE in approximately February 1949. The…
- p. 17 …The new Project GRUDGE reviewed all of the previous cases in Project SIGN, old Project GRUDGE, and from the ATIC…
- 5 more pages mention it
Historical Record Report Volume 1 March 8 2024 Report

Office of the Secretary of Defense· 63 pages · OSD reading room · 2 stories
- p. 13 …Project GRUDGE was the name given to two related, but different organizations; the second—reorganized Project GRUDGE—was established about…
- p. 15 15 Project GRUDGE (Original Organization) (February–December 1949) Background: Project SIGN was renamed Project GRUDGE in approximately February 1949. The…
- p. 16 …The new Project GRUDGE reviewed all of the previous cases in Project SIGN, old Project GRUDGE, and from the ATIC…
- 5 more pages mention it
AARO Historical Record Report Volume 1 Report

All-domain Anomaly Resolution Office· 2024-03· 63 pages · Cited by the stories · 4 stories
- p. 13 …Project GRUDGE was the name given to two related, but different organizations; the second—reorganized Project GRUDGE—was established about…
- p. 15 15 Project GRUDGE (Original Organization) (February–December 1949) Background: Project SIGN was renamed Project GRUDGE in approximately February 1949. The…
- p. 16 …The new Project GRUDGE reviewed all of the previous cases in Project SIGN, old Project GRUDGE, and from the ATIC…
- 5 more pages mention it
Report on the Historical Record of U.S. Government Involvement with Unidentified Anomalous Phenomena, Volume I Report

All-domain Anomaly Resolution Office· 2024-03-08· 63 pages · AARO · 4 stories
- p. 13 …Project GRUDGE was the name given to two related, but different organizations; the second—reorganized Project GRUDGE—was established about…
- p. 15 15 Project GRUDGE (Original Organization) (February–December 1949) Background: Project SIGN was renamed Project GRUDGE in approximately February 1949. The…
- p. 16 …The new Project GRUDGE reviewed all of the previous cases in Project SIGN, old Project GRUDGE, and from the ATIC…
- 5 more pages mention it
Office of the Secretary of Defense: 05_AARO_Historical_Record_Report Official release

Department of Defense. Office of the Secretary of Defense.· 2023· 63 pages · National Archives · 2 stories
- p. 13 …Project GRUDGE was the name given to two related, but different organizations; the second—reorganized Project GRUDGE—was established about…
- p. 15 15 Project GRUDGE (Original Organization) (February–December 1949) Background: Project SIGN was renamed Project GRUDGE in approximately February 1949. The…
- p. 16 …The new Project GRUDGE reviewed all of the previous cases in Project SIGN, old Project GRUDGE, and from the ATIC…
- 5 more pages mention it
usaf f2 FOIA release

Office of the Secretary of Defense· 1 pages · OSD reading room · 0 stories
- p. 1 …was changed to Project Grudge, and in 1953 it became known as Project Blue Book. On Dec. 17, 1969, the…
2d af 1 FOIA release

Office of the Secretary of Defense· 3 pages · OSD reading room · 0 stories
- p. 1 …Later the name was changed ~o Project Grudge, and ·in 1953, it became Project Blue Book. Between 1948 and 1969…
afUFOsandUAPsf1 FOIA release

Office of the Secretary of Defense· 3 pages · OSD reading room · 0 stories
- p. 1 …Later the name was changed to Project Grudge, and in 1953 it became Project Blue Book. Between 1948 and 1969…
UFO Hypothesis and Survival Questions FOIA release

National Security Agency· 7 pages · NSA · 2 stories
- p. 1 …s MARS MAP STUDY.) (3) United States Air Force Projects Grudge and Bluebook Reports 1-12 (1951-1953) National Investigation…
- p. 3 …cit., Project Grudge, pp.192, 149, 145. DRAFT
- p. 4 …Vitolniyek (Director of the Station for the Radio Conservation of the Ionosphere and Artificial Earth Satellites). (11) ibid., Project Grudge…
usaf f1 FOIA release

Office of the Secretary of Defense· 4 pages · OSD reading room · 0 stories
- p. 1 …Later the name was changed t~ Project Grudge, and in 1953, it became Project Blue Book. Between 1948 and 1969…
- p. 2 …Later the name was changed t~ Project Grudge, and in 1953, it became Project Blue Book. Between 1948 and 1969…
Project Blue Book microfilm guide (T1206) Document

Fold3 / NARA· 5 pages · Cited by the stories · 8 stories
- p. 3 …Box 1 Technical Report, "Unidentified Aerial Objects, Project SIGN, "Feb. 1949: 74 pp. Technical Report, "Unidentified Flying Objects, Project GRUDGE…
Project Twinkle Final Report (scan) Report

NICAP· 29 pages · Cited by the stories · 1 story
- p. 21 …Cambridge Research Laboratories lettors, dated 7 November 1949, subject: "Report of Conference on 'Green Fireballs" (Project Grudge)." (See Inclosure No…
- p. 24 …Cambridge Research Laboratories letter, dated 7 November 1949, subject: "Report of Conference on "Green Fireballs" (Project Grudge)." (See Inclosure No…
- p. 29 …This project is part of a larger program which is known as project "Grudge" and which has been established to…
- 3 more pages mention it
SCIENTIFIC ADVISORY PANEL ON UNIDENTIFIED FLYING OBJECTS 14- 17 January 1953 FOIA release

Central Intelligence Agency· 2000-11-13· 2 pages · CIA reading room · 4 stories

…ATIC Status and Progress Reports of Project GRDIGE and Project BLUE BOOK (code names for ATIC study of…
CIA-UAP-019, Australian Dept of Defense Scientific and Intel Aspects of the UFO Problem Official release

Central Intelligence Agency· 1971· 19 pages · PURSUE release (war.gov) · 4 stories
- p. 5 …A defini·te attempt vas mado during !.9·19 to use Project GRUDGE to destroy any acccptani::o of UPO…
- p. 15 …1.49 USAF onl(.:15 Project Sign tc, be:cot:!e l'ro.j(•ct Grudge ..-1,1ch sh~uld…
Letter to All Flying Saucer Researchers FOIA release

Central Intelligence Agency· 2003-07-07· 4 pages · CIA reading room · 8 stories
- p. 2 …Zimmerman's "Flying Platform" and "Flying Flapjack"; Interservice rivalry; Project GRUDGE. 3 The Turning Point (1950): Allen Dulles' new job…
Blue Book file, Rivera and Heaphy (CUFOS) Document

NICAP / CUFOS· 28 pages · Cited by the stories · 1 story
- p. 1 …PROJECT GRUDGE, Incident at Rogue River, Oregon SPECIAL INQUIRY TO: Commanding General Air Materiel Command Wright-Patterson Air Force Base…
- p. 3 …PROJECT GRUDGE, Incident, Rogue River, Oregon SPECIAL INQUIRY TO: Commanding General Air Material Command Wright-Patterson Air Force Base Dayton…
- p. 15 …PROJECT GRUDGE, Incident, Rogue River, Oregon SPECIAL INQUIRY TO: Commanding General Air Materiel Command Wright-Patterson Air Force Base Dayton…
- 4 more pages mention it
Air Force Project Blue Book Special Report 14 (Hynek's annotated copy) Report

Center for UFO Studies· 139 pages · Cited by the stories · 6 stories
- p. 5 …In the GRUDGE Report (Report No. 102 AC 49/15-100, "Unidentified Flying Objects", Project GRUDGE, Project XS-304, Release…
- p. 7 …75131 AIR FORCE DISCONTINUES FLYING SAUCEFS PROJECT Disc. Grudge The Air Force has discontinued its special project investigating and evaluating…
- p. 32 …It has been identified in the past as Project Sign and Project Grudge. Air Force interest in unidentified flying objects…
- 4 more pages mention it
proj b1 FOIA release

Office of the Secretary of Defense· 12 pages · OSD reading room · 0 stories
- p. 2 …It has been identified in the past as Project Sign and Project Grudge. Air Force interest in unidentified flying objects…
- p. 6 …outdated reports on Project Sign, Project Grudge, Blue Book Special Report No. 14, and outdated Project Blue Book press releases…
FBI file: Majestic 12, Majestic 12 Part 01 FOIA release

Federal Bureau of Investigation· 24 pages · FBI Vault · 3 stories
- p. 7 …SIGN evolved into Project GRUDGE in December, 1948. The operation is currently being conducted under the code-name BLUE BOOK…
- p. 12 …AIR FORCE "PROJECT SIGN" or "PROJECT GRUDGE". 67C
- p. 19 …SIGN evolved into Project GRUDGE in December, 1948. The operation is currently being conducted under the code name BLUE 200K…
(EST Pub Date) CIA's Role in the Study of UFO's, 1947-90, by Gerald K. Haines FOIA release

Central Intelligence Agency· 1999-07-01· 18 pages · CIA reading room · 10 stories
- p. 2 …Projects SIGN, GRUDGE, and BLUE BOOK set the tone for the official US Government position regarding UFOs for the next…
- p. 6 …to those of the earlier Air Force project reports on SIGN and GRUDGE and to those of the CIA's…
- p. 13 …See US Air Force, Projects GRUDGE and BLUEBOOK Reports 1-12 (Washington, DC; National Investigations Committee on Aerial Phenomena, 1968…
FBI Majestic 12 file (mirror) Document

The Black Vault· 25 pages · Cited by the stories · 3 stories
- p. 8 …SIGN evolved into Project GRUDGE in December, 1948. The operation is currently being conducted under the code-name BLUE BOOK…
- p. 13 …AIR FORCE "PROJECT SIGN" or "PROJECT GRUDGE". 67C
- p. 20 …SIGN evolved into Project GRUDGE in December, 1948. The operation is currently being conducted under the code name BLUE 200K…
U.F.O. Files: The Untold Story FOIA release

National Security Agency· 6 pages · NSA · 7 stories
- p. 3 …i "Grudge... This Six-month ScbuJpn of Army Air Corps ' project found no evidence of Intelligence requested the : foreign IClentific…
Arrey 1949 Blue Book documents (combined PDF) Document

NICAP· 15 pages · Cited by the stories · 1 story
- p. 14 # Dr HYNEX'S EVALUATIONS EXTRACTED FROM PROJECT GRUDGE REPORT. # INCIDENT INDEX ## 1. Astronomical a. High probability: y26,27,30,31…
Black Vault compilation, pp. 91-93 Document

The Black Vault· 134 pages · Cited by the stories · 2 stories
- p. 6 …Later the name was changed to Project Grudge, and in 1953 it became Project Blue Book. Between 1948 and 1969…
- p. 21 …outdated reports on Project SliD, Project Grudge, Blue Book Speeial Report No. 14, and outdated Project Blue Boot press releases…
- p. 29 …Later the name w&3 changed to Project Grudge, and in 1953, it became Project Blue Book. Between 1948 and…
- 4 more pages mention it
UFOs: The Untold Story (NSA-held copy) Document

The Black Vault· 7 pages · Cited by the stories · 9 stories
- p. 4 …data under the code name "Grudge." This six-month project found no evidence of foreign scientific development and therefore no…
Reply to Your Note Regarding Gordon E. Scherer(With Draft Letter to Catherine Golder Attached) FOIA release

Central Intelligence Agency· 1960-08-31· 2 pages · CIA reading room · 1 story
- p. 2 …ATIC has now admitted hiding the Project Grudge report by marking it "secret", and admitted that the CIA is involved…
Project Twinkle Final Report, November 1951 Report

Internet Archive (uploaded by Paul Galante)· 1951-11-27· 34 pages · Cited by the stories · 2 stories
- p. 17 …Cambridge Research Laboratories letter, dated 7 November 1949, subject: "Report of Conference on ''Green Fireballs" (Project Grudge) . " (See Inclosure No…
- p. 19 …Report of Cotlference on "Green Fireballs'' (Project Grudge) 5. It was the conclusion of the group present at the meeting…
- p. 20 …Cambridge Research Laboratories letters , dated 7 IJovember 1949, subject: "Report of Conference on ' Green Fireballs" (Project Grudge) ." (See Inclosure No…
CIA's Role in the Study of UFOs, 1947-90 Document

CIA (Gerald Haines)· 1997· 18 pages · Cited by the stories · 10 stories

…With asmall staff, the AirTechnicalIntelligence Center(ATIC) tried topersuade the public thatUFOswere notextraordi nary.9 ProjectsSIGN,GRUDGE, andBLUEBOOK…
[12/11/1996–09/23/1997]: 42-t-26444785-20060476F-001-002-2013 Official release

· 50 pages · National Archives · 2 stories
- p. 11 …two documents; one called 'Proje~t Grudge,' another one called 'Operation Majority.' Project Grudge cqntained the history of alien involvement…
- p. 13 …Those are some of the same documents that I, saw in Project Grudge back between 1970 and 1973, and where…
- p. 20 …The purpose of Project Grudge was to collect all scientific, techno logical, medical and intelligence information from UFO/lAC sight…
- 1 more page mentions it
Flying Saucers Again: Do You Believe in Them? FOIA release

Central Intelligence Agency· 2001-03-12· 10 pages · CIA reading room · 6 stories
- p. 2 …The unit was first called Project Sign, then Project Grudge, finally (and to this day) Project Blue Book. Project Blue…
Re: Declaration in Bryant V CIA FOIA release

Central Intelligence Agency· 2010-01-15· 58 pages · CIA reading room · 2 stories
- p. 28 …UFO data in the late 19405 under a new project GRUDGE,i distribution of the s' htin CIA oili- CM…
- p. 32 …to those of the earlier Air Force project reports on SIGN and GRUDGE and to those of the Cl.-\'s…
- p. 39 …See Air Force, Project: GRUDGE 4nd BLUE BOOK and Jacobs. The UQQ it tive Assistant to the DCl).< _ ~~‘¢M_-tt…
UFO research guide Document

The National Archives· 13 pages · Cited by the stories · 10 stories
- p. 4 …information supplied by the US Air Force UFO project (now renamed Grudge) and the CIA. US policy was to debunk…
- p. 6 …by the USAF Project Blue Book between 1947 and 1969 (Blue Book followed Projects Sign and Grudge in 1952). Of…
The UFO files extract Document

The National Archives· 22 pages · Cited by the stories · 3 stories
- p. 10 …Churchill was told that an earlier investigation, carried out by Project Grudge in 1948–9 had reached a similar conclusion…
- p. 20 …Project Blue Book 46, 51, 57, 60, 61, 63, 66, 74, 81, 127 Project Condign see Condign Report Project Grudge…
Meetings of OSI Advisory Group on Unidentified Flying Objects, 14-17 January 1953 FOIA release

Central Intelligence Agency· 2001-06-05· 19 pages · CIA reading room · 4 stories

…ATIC Status and Progress Reports of Project GRDUGE and Project BLUE BOOK (code names for ATIC study of…
UFO research guide, August 2011 Document

The National Archives· 2011-08· 15 pages · Cited by the stories · 12 stories
- p. 4 …information supplied by the US Air Force UFO project (now renamed Grudge) and the CIA. US policy was to debunk…
- p. 6 …by the USAF Project Blue Book between 1947 and 1969 (Blue Book followed Projects Sign and Grudge in 1952). Of…
UFO files briefing guide Document

The National Archives· 15 pages · Cited by the stories · 10 stories
- p. 4 …information supplied by the US Air Force UFO project (now renamed Grudge) and the CIA. US policy was to debunk…
- p. 6 …by the USAF Project Blue Book between 1947 and 1969 (Blue Book followed Projects Sign and Grudge in 1952). Of…
Unidentified Flying Objects research guide Document

The National Archives· 15 pages · Cited by the stories · 8 stories
- p. 4 …information supplied by the US Air Force UFO project (now renamed Grudge) and the CIA. US policy was to debunk…
- p. 6 …by the USAF Project Blue Book between 1947 and 1969 (Blue Book followed Projects Sign and Grudge in 1952). Of…
Unidentified flying objects: hearing before the Committee on Armed Forces of the House of Representatives, Eighty-ninth Congress, second session, April 5, 1966 ... Hearing transcript

U.S. House Committee on Armed Services· 1966-04-05· 88 pages · Cited by the stories · 3 stories
- p. 9 …It has been identified in the past as Project Sign and Project Grudge. Air Force interest in unidentified flying objects…
- p. 11 …The Air Force no longer possesses, and thus does not have for distribution, outdated reports on Project Sign, Project Grudge…
Project Blue Book Administrative Files: 595507 Official release

Department of Defense. Department of the Air Force. Air Materiel Command. Intelligence Department. Technical Intelligence Division.· 1947· 17 pages · National Archives · 1 story
- p. 1 CONFIDENTIAL UNCLASSIFIED SECURITY INFORMATION ## STATUS REPORT # PROJECT BLUE BOOK - REPORT NO. 8 FORMERLY PROJECT GRUDGE PROJECT NO. 10073 31 DECEMBER…
Project Blue Book Administrative Files: 09475_2005 Official release

Department of Defense. Department of the Air Force. Air Materiel Command. Intelligence Department. Technical Intelligence Division.· 1947· 17 pages · National Archives · 2 stories
- p. 1 CONFIDENTIAL UNCLASSIFIED SECURITY INFORMATION ## STATUS REPORT # PROJECT BLUE BOOK - REPORT NO. 8 FORMERLY PROJECT GRUDGE PROJECT NO. 10073 31 DECEMBER…
Project Blue Book case file, Chiles-Whitted (PDF) Document

The Black Vault· 162 pages · Cited by the stories · 2 stories
- p. 22 # Dr HYNEK'S EVALUATIONS EXTRACTED FROM PROJECT GRUDGE REPORT. # INCIDENT INDEX ## 1. Astronomical a. High probability: 26,27,30,31…
Blue Book file, Rogue River (Brad Sparks) Document

NICAP· 21 pages · Cited by the stories · 1 story
- p. 13 …PROJECT GRUDGE, Incident, Rogue River, Oregon SPECIAL INQUIRY TO: Commanding General Air Material Command Wright-Patterson Air Forces Base Dayton…
The Roswell Report: Fact vs. Fiction in the New Mexico Desert Report

USAF / The Black Vault· 1995· 882 pages · Cited by the stories · 2 stories
- p. 26 …investigation of UFOs reported in Project Bluebook or its predecessors, Project Sign and Project Grudge, which ran from 1948-1969…
- p. 68 …Blue Book Special Report 14 and the Project Sign and Project Grudge reports. These primary documents should have been part…
roswell FOIA release

Office of the Secretary of Defense· 993 pages · OSD reading room · 2 stories
- p. 29 …investigation of UFOs reported in Project Bluebook or its predecessors, Project Sign and Project Grudge, which ran from 1948-1969…
- p. 78 …Blue Book Special Report 14 and the Project Sign and Project Grudge reports. These primary documents should have been part…
Report of Air Force Research Regarding the Roswell Incident Report

NSA (declassified documents)· 1994-07· 22 pages · Cited by the stories · 2 stories
- p. 5 …investigation of UFOs reported in Project Bluebook or its predecessors, Project Sign and Project Grudge, which ran from 1948-1969…
rosswe1 FOIA release

Office of the Secretary of Defense· 31 pages · OSD reading room · 2 stories
- p. 7 …investigation of UFOs reported in Project Bluebook or its predecessors, Project Sign and Project Grudge, which ran from 1948-1969…
UFOs and Related Subjects (Lynn Catoe, 1969) Document

Government Attic· 419 pages · Cited by the stories · 4 stories
- p. 31 …He also gives history of USAF's research effort into UFO phenomena, including Project Saucer and P:.·oJe~~ Grudge. 1be…
- p. 183 …102-AC 49/15100) Report discusses in full the history of Project Grudge, the problems encounter- ed, and the prov…
- p. 194 …Unidentified flying objects; Project Grudge. Dayton, Ohio, Wright-Patterson Air Force Base, 1949. 366 p. (Its Technical Report No. 102…
- 3 more pages mention it
Symposium on unidentified flying objects: hearings before the Committee on Science and Astronautics, U.S. House of Representatives, Ninetieth Congress, second session, July 29, 1968. Hearing transcript

U.S. House of Representatives· 1968-07-29· 256 pages · Congress and GPO · 6 stories
- p. 15 …unshaken—and when the Air Forces an- nounced that Project Grudge had been dissolved, I assumed that my colleagues had…
- p. 32 …The first time anyone tried the ball lightning hypothesis was in Air Force Project Grudge, back in 1949. The Weather…
- p. 90 …Project Grudge, 1949: Unidentified Flying Objects, Report No. 102 AC 49/15-100, Project XS -304, released August, 1949. I…
- 2 more pages mention it
Flying Saucers UFO Reports FOIA release

Central Intelligence Agency· 2001-03-12· 68 pages · CIA reading room · 7 stories
- p. 11 …its initial organized filing, first with Project Sign then Project Grudge, and finally Project Blue Book. But in the Spring…
- p. 64 …The Project was born under the name Sign, later became Grudge and is known today as Blue Book. Its history…
1948 07 9670642 20Mi SofMontgomery Ala 144 (Project Blue Book case file) Document

Internet Archive· 2015-12-05· 161 pages · Cited by the stories · 2 stories
- p. 21 # Dr HYNEK'S EVALUATIONS EXTRACTED FROM PROJECT GRUDGE REPORT. # INCIDENT INDEX ## 1. Astronomical a. High probability: 26,27,30,31…