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.Significant Achievements in Space Bioscience 1958-1964Author: United States. National Aeronautics and Space Administration,Language: English, Class: QH: Science: Natural history, Release Date: Jul 17, 2012