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.A Study of Association in Insanity by Grace Helen Kent and A. J. RosanoffAuthor: Rosanoff, A. J. (Aaron Joshua), 1878-,Language: English, Class: RC: Medicine: Internal medicine, Release Date: Oct 1, 2005