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.Die Grundlagen der Arithmetik by Gottlob FregeAuthor: Frege, Gottlob, 1848-1925,Language: German, Class: QA: Science: Mathematics, Release Date: Feb 19, 2015