File:McPherson Letter, 1813.jpg

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English: Letter from Thomas Jefferson to Isaac McPherson (1813) discussing his views on intellectual property and the validity of Oliver Evans' patents.
Date
Source Library of Congress
Author Thomas Jefferson

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10 April 2014

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current01:32, 10 April 2014Thumbnail for version as of 01:32, 10 April 20141,667 × 2,239 (846 KB)Unus MultorumUser created page with UploadWizard

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