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.The Details of the Rocket System by Sir William CongreveAuthor: Congreve, William, Sir, 1772-1828,Language: English, Class: UF: Military science: Artillery, Release Date: Aug 28, 2018