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.History of the Transformer by Friedrich UppenbornAuthor: Uppenborn, Friedrich, 1859-1907,Language: English, Class: TK: Technology: Electrical, Electronics and Nuclear engineering, Release Date: Jan 13, 2018