"Unreal City" by Judith Nies. The author has spent decades reasearching the behind-the-scene struggle over power, land and water and just how fragile Las Vegas and the rest of the southwest USA is because of these issues. It's also a tale of the clashes and secret deals between Mormon power-brokers, energy corps, Arizona Indians and govt agencies. If Vegas is your only interest, there is plenty in the book on the life of the casino world. It also serves as a travelogue to people and places, such as how Laughlin got started 50 years ago.