In most human endeavors, there are people who help. Those people should be thanked, publicly if possible. There are several people whose contributions were important to having this book published, and I’d like to thank them. Donald was the vice-president of Finance, my advisor, and friend during the years as owner of my company. Both Earlyn and Jim were early readers whose comments were encouraging enough to keep me going. In addition, Earlyn helped identify the people to contact to get this book published. If you are helped by this book, you should thank her too.