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This National Archives research guide on Unidentified Flying Objects was written by Dr David Clarke of Sheffield Hallam University in March 2008 and revised in 2010 and 2011. It traces British official interest in UFOs from the phantom airships of 1909 and 1913, through the 1950 Flying Saucer Working Party, to Air Ministry and MoD investigations. It also points readers to key record series, including Freedom of Information releases and the Rendlesham Forest files. The guide notes that most reports had ordinary explanations.
• Ruppelt, Edward J. The Report on Unidentified Flying Objects. London: Gollancz, 1957 • Twigge, Steven with Hampshire, Edward and Macklin, Graham. British Intelligence: Secrets, Spies and Sources. Kew: The National Archives, 2008 • Letter ‘Opinion on Flying Discs’ sent by Twining to the Brigadier General Schulgen, Commanding General of the Army Air Forces, 23 September 1947, originally classified ‘Secret and declassified in 1969 now at US National Archives, College Park, Maryland, see: http://www.project1947.com/fig/twinng47.htm Articles • Clarke, David and Roberts, Andy. ‘Britain’s X-Files’, Fortean Times 164 (November 2002), 38-44. • Clarke, David. ‘The Rendlesham Forest Incident: Britain’s Roswell?’ The Sceptic 12/2-3 (2004), 17-21. • Clarke, David. ‘Opening the UFO files’ BBC History Magazine vol 6/8 (August 2005), 43-46. • Haines, Gerald K. ‘A die-hard issue: CIA's role in the study of UFOs, 1947-90', Studies in Intelligence: Semiannual Unclassified Edition 1 (1997), 67-84 • Jones, R.V. ‘The natural philosophy of flying saucers,' Physics Bulletin 19 (July 1968), 225-30 • Morgan, Roger J. ‘British Government UFO files in the Public Record Office,' Magonia 30 (August 1988), 12-15 Dr David Clarke of the Department of Journalism and Communication, Sheffield Hallam University created this briefing document for The National Archives, in March 2008. Revisions were made in February 2010, January and August 2011. The National Archives is not responsible for content created by external parties. 15
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