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.History of the Harvard College Observatory During the Period 1840-1890 by BakerAuthor: Baker, Daniel W.,Language: English, Class: QB: Science: Astronomy, Release Date: May 30, 2019