U.S. Air Force Material Command, 1949: Project ‘SIGN’, Dayton, Ohio: Wright-Patterson AFB

U.S. National Military Establishment, 1949: Project ‘SAUCER’, Memorandum to Press 27. April 1949; Chicago, IL: CUFOS

U.S. Air Force Material Command, 1949: Project “GRUDGE” Final Report, Dayton, Olhio: Wright-Patterson AFB

U.S. Air Force Material Command, 1951: Project “TWINKLE” Final Report, Dayton, Olhio: Wright-Patterson AFB

U.S. Department of Defense, 1952: Minutes of Press Conference Held by Major General John A. Samford, Director of Intelligence, USAF, 29. Juli 1952 (in following to the Washington D.C. sightings); DOD

U.S. Central Intelligence Agency, 1953: Report of Meeting of Scientific Advisory Panel On UFOs Convened by Office of Scientific Intelligence CIA, (Robertson Panel); Chicago, IL: CUFOS

U.S. Congress (House Committee on Science and Astronautics), 1961: Proposed Studies on the Implications of Peaceful Space Activities From Human Affairs, (NASA Brookings Instruction Report); House Report No. 242, 87^th Congress, 1^st Session, Vol. 2 serial 12338

U.S. Congress (House Committee on Armed Services), 1966: Unidentified Flying Objects, Hearings, 89^th Congress, 2^nd Session, 15. April 1966; Washington, D.C.:Government Printing Office

U.S. Air Force Material Command, 1966: Special Report (O’Brien Committee); Washington, D.C.; USAF

U.S. Congress (House Committee on Science and Astronautics), 1968: Symposium on UFOs, Hearings, 90^th Congress, 2^nd Session; Washington, D.C., Government Printing Office

The Director of National Intelligence (DNI), 2021: Preliminary Assessment - Unidentified Aerial Phenomena

PDF-Download