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.On Guard: Mark Mallory's Celebration by Upton SinclairAuthor: Sinclair, Upton, 1878-1968,Language: English, Class: PZ: Language and Literatures: Juvenile belles lettres, Release Date: May 13, 2011