books.google.com - How did one of the great inventions of the nineteenth century—Thomas Edison's phonograph—eventually lead to one of the most culturally and economically significant technologies of the twentieth and twenty-first centuries? Sound Recording traces the history of the business boom and the cultural revolution...http://books.google.com/books/about/Sound_Recording.html?id=0ZmjkJwxyWcC&utm_source=gb-gplus-shareSound Recording
