Here we can see the tower of radio station KMPC shining its lights over Beverly Hills some time in the mid-to-late 1930s. In the early 1930s, the station changed ownership, locations, and dial positions many time, but eventually became KMPC when it was acquired by the McMillan Petroleum Company, hence the initial MPC. I’m not sure why a petroleum company would want or need a radio station, but that sort of thing was quite common then. More significantly, in the 1940s, the station’s Director Of Engineering was Lloyd Sigmon, who gave us the famous “Sig-Alert”, which is traffic snarl alert and an expression Angelenos still use today.