When a Des Moines insurance company started a radio station in 1924, no one imagined it would bring news from a world war home to families desperate for information, carry the exploits of University of Iowa athletics to fans nationwide, draw the ire of a Cuban dictator, and be home to a future president. From the earliest days of "This is W-H-O. Who? Bankers Life, Des Moines" to today's "50,000-watt, clear channel voice of the middle west," one of the most powerful radio stations in America has been part of Iowa life for nearly 90 years. With a signal that reaches "from coast to coast, border...