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.Grand Teton: A Guide to Grand Teton National Park, WyomingAuthor: United States. National Park Service,Language: English, Class: F721: United States local history: Rocky Mountains. Yellowstone National Park, Release Date: Aug 23, 2017