I found this a fascinating read. No characters, no plot, just good clean insight on why places carry the names they do, and a little tidbit of history about them. Barnes provides, when possible, coordinates for each place; read with a descent map next to you and a whole new picture of Arizona is opened to your mind.
Example: The area just south of Snow Bowl, known as Fort Valley, was once the sight of the Fort Moroni Cattle Company. Cattle from the ranch were herded between Mormon Lake where the dairy was located and the ranch headquarters, where the summer range was located.