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.Through the Black Hills and Bad Lands of South Dakota by P. D. PetersonAuthor: Peterson, P. D. (Purl Dewey), 1900-1967,Language: English, Class: F590.3: United States local history: The West. Trans-Mississippi Region. Great Plains, Release Date: Jan 18, 2017