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.Cave Regions of the Ozarks and Black Hills by Luella Agnes OwenAuthor: Owen, Luella Agnes, 1852-1932,Language: English, Class: GB: Geography, Anthropology, Recreation: Physical geography, Release Date: Dec 19, 2005