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.Detectives, Inc.: A Mystery Story for Boys by William HeyligerAuthor: Heyliger, William, 1884-1955,Language: English, Class: PZ: Language and Literatures: Juvenile belles lettres, Release Date: Nov 21, 2013