The Acme Gardening Service van used to take Irona has the telephone number 985-0359 on the side. Most TV shows and movies use a 555 prefix as to not use a working number.
"Piggy Bank Prank" marks the first appearances of Richie, Gloria Glad, Reggie Van Dough and Dollar the Dog.
"Reggie's Pet Monkey" marks the first appearance of Richard Rich, Sr.
"Muscle Beach" marks the first appearance of Cadbury.
"The Robotnappers" marks the first appearances of Freckles Friendly and Irona.