Mister Rogers' Neighborhood S16 E14 Celebrations

"Won't you be my neighbor?"

Friday's Comet arrives in the Neighborhood of Make-Believe, bearing a note that neither King Friday nor anyone else will forget. They all go to the Museum-Go-Round for Henrietta's surprise birthday party. After the party, Henrietta is surprised to hear that Reardon is making a new opera that will air the next day.