Mister Rogers' Neighborhood S01 E12 A visit with a toucan, a mime and a French horn

"Won't you be my neighbor?"

Title number 0012. Opens with Mister Rogers arriving with a toucan in a cage under a blanket. Jewel Walker visits the television house, where he transforms into Mime Walker. He heads to Make-Believe, where he helps X learn arithmetic with a musician who is playing a French horn for X.