WHERE CREDIT IS DUE
According to these end credits for "Wyatt Earp Visits The Williams" episode of 'Make Room For Daddy', it looks as though Johnny Crawford was in that show. Unfortunately, he must have been cut out of the original broadcast print at some point in syndication because there was no sign of anybody else but Hugh O'Brian.
Crawford must have played the older boy who was supposed to take Terry to the school masquerade - until he got the mumps, that is.
I don't know if the scene took place, but wouldn't it have been neat to see the actors who played Wyatt Earp and Mark McCain together in a scene......?
BCnU!