Gutenberg’s genius lay in adapting existing technology, a press, with his unique development, movable type. This University of Texas education module website attempts to unravel the mystery of the man and the early years of his world changing innovation. Far beyond a bit of detective work, this resource incorporates high resolution images and detailed discussion, to trace the development of the book from antiquity to today.
http://www.hrc.utexas.edu/educator/modules/gutenberg/books/legacy/