When Beaver is talking to Wally after going around the neighborhood a second time, he says, "Even that crazy guy who chased us away yesterday gave us money today." That doesn't make sense since the purpose of Beaver and Gilbert's second trip was just to record how much each donor had given. They weren't seeking any new donations, so why would they have bothered that man again - especially when they were afraid of him?
This episode is the has the highest production costs of the entire series. They had to build the very expensive billboard and use more than the usual number of studio sets.
In this episode, Eddie's father is Frank Haskell. When Eddie's father appears in season 1 on the bus ride, his name is George and in season 6 in the credit card episode, Eddie's father is named George.
This episode contains a rare early sitcom reference to God in a way that is neither vague nor comical. June, fearing that Beaver may be stealing school equipment, reminds him that when he is alone and thinks he can't be seen, there is Someone who can see him. Beaver asks if she means God, and June nods her head yes. Beaver then says he would not want to upset God since He has enough trouble with the Russians, a reference to the Cold War, another early sitcom rarity.
Beaver's given name (Theodore) is misspelled as "Theodour" in the newspaper article on his "heroics."
When the Cleavers are at the restaurant, there is a young woman sitting at a nearby table. She looks a lot like the actress that plays Beaver's school teacher in other episodes. She was probably cast in the role as an extra in the restaurant scene as the Cleavers don't 'recognize her' sitting nearby.