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.The Postal System of the United States and the New York General Post OfficeAuthor: Jefferies, Thomas C.,Language: English, Class: HE: Social sciences: Transportation and communications, Release Date: Nov 13, 2013