This is a pretty good book, tracing the period from the invention of different means of telegraphy to the advent of the telephone. Most chapters zip along at a good pace, your attention is caught by the characters and the rapid evolution of a quite dramatic form of communication. The book reveals how this impacted all sorts of business and personal lives. Also it stands as a pretty good metaphor for all sorts of novel industries as they grow up and mature today. It won't take an age to read but it's absorbing.