In this book, the Rocky Mountains somehow includes Arizona. Jan MacKell’s observations of the Earp women and the “control of prostitution” for the O.K. Corral shoot-out will give Arizona historians pause. Avoiding the usual sources required for research, she relies on handier material, such as Wikipedia, to include the Kaloma photo, incorrectly identified as Josephine Marcus Earp. True West readers will remember that controversy spilling out on these pages in the 1990s.