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.Aircraft and Submarines by Willis J. AbbotAuthor: Abbot, Willis J. (Willis John), 1863-1934,Language: English, Class: UG: Military science: Military engineering, Release Date: Sep 20, 2009