Exhaustive account of the life of the greatest inventor born in America. Confusing arrangement of timeline. Author begins the book with Edison’s last years of life. Auto book helpful in comprehension. Auto book timing with the book a problem when researching a topic. Discs are labeled only by chapter number and not to subtitles. Minor error found in index. Wallace, William J and William Wallace the inventor listed as one. 400 lights illuminated on Sept. 4 1882 in lower Manhattan, not 800 on page 425. On page 422, he mistakenly states 220 volts when the two ‘hot’ branches of Edison’s Three Wire System carry 110 volts each.