There was an article (pg-3) in the latest Journal titled ‘United Pilgrim Crusade based on old WCG’. The author of this article wrote

The episode, titled “Charlatan,” starring Ed Asner, who plays newspaperman Lou Grant, deals with a fundamentalist Christian ministry based in Rosemead, Calif., noted for its beautifully landscaped campus and extensive expensive art collection, as well as a grand auditorium, among other things. I won’t overly delve into the plot but will point out interesting parallels that indicate where the episode’s writers may have gotten their inspiration: headlines in L.A.-area newspapers of the time.