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 Cave in the Mountain by Edward Sylvester EllisAuthor: Ellis, Edward Sylvester, 1840-1916,Language: English, Class: PZ: Language and Literatures: Juvenile belles lettres, Release Date: Jan 10, 2005