Mister Rogers' Neighborhood (1968)

Season 24: Episode 2

Rogers inevitably fools Marilyn Barnett by donning the Bob Dog costume. Mr. McFeely shows a videotape on how blue jeans are made. Lady Elaine Fairchilde provides the only resistance to King Friday's insistence that everyone and everything in the Neighborhood of Make-Believe should wear the three-cornered hat from the 18th century.