Oh that must have been a ratings bonanza.

Gosh: wonder if WCFL was a union mouthpiece? Absolutely: “WCFL (1000 AM) was the callsign of a commercial radio station in Chicago, Illinois, United States. It was owned by the Chicago Federation of Labor, hence its call letters. The station is now known as WMVP. Its transmitter is located in Downers Grove and is still in use by WMVP. The station billed itself as "The Voice of Labor" from its inception until its sale to Mutual in 1978.

The station eventually went top 40, and was the home of Chickenman, Dick Orkin’s superhero parody.

I wish I had matches for that.