Anyone who pays attention to the popular press knows that the new media will soon make books obsolete. But predicting the imminent demise of the book is nothing new. At the beginning of the twentieth century, for example, some critics predicted that the electro-mechanical phonograph would soon make books obsolete. Still, despite the challenges of a century and a half of new media, books remain popular, with Americans purchasing more than eight million books each day. In How Books Came to...