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 Silver Princess in Oz by Ruth Plumly ThompsonAuthor: Thompson, Ruth Plumly, 1893-1976,Language: English, Class: PZ: Language and Literatures: Juvenile belles lettres, Release Date: Nov 30, 2017