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.Color Cement Handicraft by Pedro J. Lemos and Reta A. LemosAuthor: Lemos, Reta A.,Language: English, Class: TP: Technology: Chemical technology, Release Date: Sep 17, 2016