More than any other political boss of the early twentieth century, Thomas Dennison, "the Rogue who ruled Omaha," was a master of the devious. Unlike his contemporaries outside the Midwest, he took no political office and was never convicted of a crime during his thirty-year reign. He was a man who managed saloons but never cared for alcohol; who may have incited the Omaha Race Riot of 1919 but claimed he never harmed a soul; who stood aside while...