16 Olga Comes Home | Sally's Comet

Olga Comes Home: Jealous about her smart, talented, popular older sister Olga returning home from college, Helga fiendishly changes one of her grades from an A to B+, which sends Olga into a deep depression.
Sally's Comet: Arnold and Gerald mail in cereal box tops to receive a telescope so they can see the well-known interstellar event known as Sally's Comet. The problem is that it's too bright for them to see the stars. Now they try to convince everybody in the city to turn off their lights.