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.Curiosities of Heat by Lyman Beecher TefftAuthor: Tefft, Lyman Beecher, 1833-,Language: English, Class: QC: Science: Physics, Release Date: Apr 29, 2012