The prisoner Peggy visits is named after this episode's director, Wesley Archer.
When Dale asks to become an executioner, the warden adds him to the list as number 129. #128 is John Altschuler who was one of the writers of thisn episode, and #127 is Alex DeLarge the protagonist of the book and subsequent film A Clockwork Orange (1971).
Bobby's essay that Peggy covers up with Wesley's drawing reads: "Some people might try to tell you that pollution is good. I think they are wrong. From all the research I have done it seems to me that pollution is bad. Very bad. Pollution makes the sky a funny brown color and that is bad. The only way to stop all this pollution is if we will just stop spilling oil and throwing our garbage around. My dad says that if we all used propane there would be a lot less pollution because propane is a clean burning efficient fuel. I am so sure that pollution is bad that when I get this paper back I will never throw it out."