Having grown up in Chicago, I have fond memories of WGN. I was in the audience of Bozo's Circus in 1967 (I was six). I wasn't chosen for the Grand Prize Game
I remember Bozo and Ring Master Ned making wisecracks during the commercials. At home, I watched it on a B&W Motorola in our basement with just rabbit ears. Multiple ghost images were just part of the experience.
I also recognize Ray Rayner on the the set of the "Dick Tracey" cartoon show. That was before my time, but I sure remember Ray Rayner and Friends-- it was on every weekday morning. Who can forget Cuddly Duddly?
And the Bert Weinman "your TV Ford man" was an institution. As I recall, the pitch man in the commercials was Lynn Bertun. All the used cars had "radio, heater and whitewalls" and were "100% winterized!" Lynn Bertun was also owner of Ribs 'n Bibs restaurants and would sometimes work the counter at the one on south 53rd street. Ah, memories
-Clark