Eddie Cantor, one of CBS's biggest stars (third from left) came to San Francisco in 1938 to promote KSFO's new affiliation with the network.  Here, he sings barbershop harmonies with (left to right) Bert Parks, San Francisco mayor Angelo Joseph Rossi, and KSFO newsman Bob Garred.  Rossi held the office of mayor from 1931 to 1944.