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Project Gutenberg was the first provider of free electronic books, or eBooks. Michael Hart, founder of Project Gutenberg, invented eBooks in 1971 and his memory continues to inspire the creation of eBooks and related technologies today.Scientific American, Volume 22, No. 1, January 1, 1870 by VariousAuthor: Various,Language: English, Class: T: Technology, Release Date: Sep 1, 2005

《International May Day and American Labor Day》
《The Seminole Indians of Florida》
《The Iron Boys as Foremen or, Heading the Diamond Drill Shift》
《The Trembling of the Veil》
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