The Honeymooners pre-show communist warning

Backstory:

In ~1956 in St. Louis Missouri, Apparently, before each episode of The Honeymooners, the station that would air the show (likely KWK-TV. or an CBS affiliate?) would play a message where a man in a suit would talk to the camera and state something along the lines of "We at the station would encourage viewer discretion, as we have reason to believe that this show may be communist propaganda, as an American worker would never live the conditions described in this show"

Apparently this was a local thing, and not aired elsewhere, at least not in places like NYC. Can anyone confirm this?