http://www.youtube.com/watch?v=jBCtF7huXn8
At about :47 of this clip is an ad for Korvettes with legendary game show host Bill Cullen featured. Cullen did not do a lot of advertising other than promoting products on the shows he hosted so this is a find from both the department store and game show angles.
What I find most interesting about this clip is the station identification: "WMAQ Chicago" (at the end). Wikipedia shows six Korvettes locations in Illinois, all in Chicagoland if my geography is correct.
