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.The Airplane Boys among the Clouds by John Luther LangworthyAuthor: Langworthy, John Luther,Language: English, Class: PZ: Language and Literatures: Juvenile belles lettres, Release Date: Jul 9, 2007