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.Screw-Thread Cutting by the Master-Screw Method since 1480 by Edwin A. BattisonAuthor: Battison, Edwin A.,Language: English, Class: Q: Science, Release Date: Mar 24, 2010