I have recently read this book.
The author, Tom Standage, tells us the fantastic story of the expansion of the Telegraph in the XIXth century. The Telegraph, far more than the Internet nowadays, has been the most important information technology of its time, changing fundamentally the communications and the business world.
What is also very interesting is the parallelism you can get from comparing the development of the telegraph and the Internet. You can see that users' expectations where quite similar, thinking it would bring peace between nations, and also that at this time you already had examples of spamming and criminal uses of the network.
I highly recommend you to read this book to know better the incredible success of the first information technology.
You can get this book at my store, The Nicolas Schriver Store.