I was just alerted to the fact that there is a new edition of this very interesting book on the history of coin-operated machines!
From the description:
The book established many new facts and destroyed many of the myths that had arisen in the gaming industry during the 20th century. Originally an ancient Greek invention the advent of the coin machine in the 19th century heralded a Victorian revolution which sought to establish a fully automated society. The visionaries of the past are the direct forbears of the all pervasive computer industries -- without the gaming and coin machine industries it is doubtful as to whether today's computer dominated age would have ever happened.
There are some really wonderful images and diagrams in this book. Be sure to use the "Look Inside" feature at Amazon to see what I mean!
Here is where you can buy Automatic Pleasures: - The History of the Coin Machine