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.An Essay on Medi?val Economic Teaching by George Augustine Thomas O'BrienAuthor: O'Brien, George Augustine Thomas, 1892-,Language: English, Class: HB: Social sciences: Economic theory, Demography, Release Date: Sep 17, 2004