French National Library Buys World\'s Oldest Known Photograph

The BBC reports that the \"world\'s oldest known photograph has been sold to the French National Library for 450,000 euros ($392,000).The image of an engraving depicting a man leading a horse was made in 1825 by Nicephore Niepce, who invented a technique known as heliogravure.\"

Read about the library\'s acquisition of the \"French National Treasure\" in the full story.

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