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.Balloons, Airships, and Flying Machines by Gertrude BaconAuthor: Bacon, Gertrude, 1874-1949,Language: English, Class: TL: Technology: Motor vehicles, Aeronautics, Astronautics, Release Date: May 27, 2017