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.Viaje a los Estados Unidos, Tomo III by Guillermo PrietoAuthor: Prieto, Guillermo, 1818-1897,Language: Spanish, Class: E151: History: America: United States, Release Date: Feb 18, 2019