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.The Origin of Vertebrates by Walter Holbrook GaskellAuthor: Gaskell, Walter Holbrook, 1847-1914,Language: English, Class: QH: Science: Natural history, Release Date: Nov 13, 2013