Pollution in the Neighborhood of Make-Believe Mister Rogers' Neighborhood : Season 5 Episode 9
TV-Y National Educational Tele 30m int(0)
Aired: March 2nd, 1972 @ 7:00 PM EST on National Educational Tele
Corny asks Robert Troll to dump an excess amount of stain into into a creek. The resulting pollution leaves a bad smell and tars the Castle fountain. King Friday orders Corny not to manufacture until he can clean up the mess.