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JeffersonPolygraphReproductionFrontView.jpg(640 × 455 pixels, file size: 45 KB, MIME type: image/jpeg)

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English: A modern reproduction of a polygraph machine similar to the type Thomas Jefferson used. Made by Wilman Spawn, c. 1974.
Date Unknown date
Unknown date
Source Description page Library of Congress
Author National Portrait Gallery, Smithsonian Institution


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This image or file is a work of a Smithsonian Institution employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain in the United States.

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current02:13, 28 January 2012Thumbnail for version as of 02:13, 28 January 2012640 × 455 (45 KB)Brad101 (talk | contribs)
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