Guardabascio, Mike: - Official state historian of Arizona, Marshall Trimble is an award-winning author, cowboy philosopher, educator, lecturer, folk singer and stage performer. He taught local history for forty years at Scottsdale Community College and appears frequently on radio and television as the state's goodwill ambassador. His first book, Arizona, was published in 1977 by Doubleday & Co. in New York, and since then he's written more than twenty books on Arizona and the West.