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English: Colossus codebreaking computer in operation
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This file is from the collections of The National Archives (United Kingdom), catalogued under document record FO850/234. For high quality reproductions of any item from The National Archives collection please contact the image library.

This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing for more information.

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Derivative works of this file: Dorothy Du Boisson.jpgDorothy Du Boisson.jpg


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This work created by the United Kingdom Government is in the public domain.

This is because it is one of the following:

  1. It is a photograph taken prior to 1 June 1957; or
  2. It was published prior to 1969; or
  3. It is an artistic work other than a photograph or engraving (e.g. a painting) which was created prior to 1969.

HMSO has declared that the expiry of Crown Copyrights applies worldwide (ref: HMSO Email Reply)
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current19:56, 8 March 2017Thumbnail for version as of 19:56, 8 March 20173,504 × 2,337 (887 KB)Uzume (talk | contribs)Larger more detailed scan
19:24, 1 March 2009Thumbnail for version as of 19:24, 1 March 2009500 × 331 (97 KB)Ian Dunster~commonswiki (talk | contribs) Changed to greyscale.
02:50, 8 January 2006Thumbnail for version as of 02:50, 8 January 2006500 × 331 (34 KB)Hellisp (talk | contribs)from en.wikipedia {{{PD}} Category:Supercomputers
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