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 United States Constitution by United StatesAuthor: United States,Language: English, Class: KF: Law in general, Comparative and uniform law, Jurisprudence: United States, Release Date: Dec 1, 1975