Herman's written a book called A Farewell To Arm (a reference to A Farewell to Arms, by Ernest Hemingway). Nelson's written one called i, Bully (a reference to i, Robot by Isaac Asimov). And Willie's written a novel called Postcards From The Hedge (which references Postcards from the Edge by Carrie Fisher).
This is the 10th episode to not have the Couch Gag, Billboard Gag, and the Chalkboard Gag. It is also the second episode in a row to not have the gags.
This is the last episode to air in 2012.
Despite Homer's MyPad being destroyed in A Tree Grows in Springfield, it appears again in this episode although he might've bought a new one. It can also be possible that this episode takes place during aforementioned episode.
In the flashback of this episode, Herman loses his arm while trying to hitch a ride to piano school, when the Springfield Animal Control Truck speeds by. However, it was implied in both Homer's Odyssey and Bart the General that he lost his arm while hanging it out of the school bus window. Even though he originally referenced this as a warning to Bart, he apparently wrote a memoir about it.
In the flashback the children that are seen are kids that are regularly seen at Springfield Elementary School. These children were obviously not born when Homer was a kid. It is possible that the children in the flashback are the kid's parents in the present.