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.Photographs of Nebul? and Clusters, Made with the Crossley Reflector by KeelerAuthor: Keeler, James Edward, 1857-1900,Language: English, Class: QB: Science: Astronomy, Release Date: Jun 19, 2011