Like many, many early TV shows, George & Gracie were originally a radio program that was adapted to television. Many of their old radio episodes can be found on the Internet Archive, including a bizarre and fantastic one called "Gracie Runs For President."
I highly suggest listening to this for 2 reasons: 1) It continues to play with the gender roles pointed out by Modleski in this week's reading, and 2) It's a fantastic example of proto-transmedia storytelling. During the week-or-so long arc of this story, Gracie appeared on other radio programs - Fred Allen, Jack Benny, Bob Hope - to "promote" her presidential campaign. This serves as an ad for George & Gracie themselves, but also furthers the narrative of their program on other programs. Radio definitely had more interesting things happening in it than MacLuhan cared to examine.
The link is below. Enjoy!