When Herb Kent was a straight-A college student in the 1940s, his white professor told him, "You have the best voice in class, but you'll never make it in radio because you're a Negro." This did not deter the poor kid from the Chicago housing projects who had decided on a radio career at age five. It was just one more obstacle to face head on and overcome. Known as the Cool Gent, the King of the Dusties, and the Mayor of Bronzeville, Herb...