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.Manufacturing Cost Data on Artificial Ice by Herman Friedl and Otto LuhrAuthor: Luhr, Otto, 1863-,Language: English, Class: TP: Technology: Chemical technology, Release Date: Jul 11, 2009