The newsstand scene is a callback to the comic, which used the vendor talking to a boy as a frequent mix of exposition drop and commentary on events in the comic.
In the play, "Jane" stumbles on a line about the Gordian Knot. This is another reference to Alexander the Great, who was told that if he solved the puzzle of the knot he would rule the world. He solved the problem by drawing his sword and cutting the knot into two.
The song playing over the closing credits is "Egg Man" by the Beastie Boys. Eggs are a recurring theme in the series.
The scene from the TV series "American Hero Story" takes inspiration from the fragments of the autobiography (included in the graphic novel) of Hollis Mason. It depicts a story of the vigilante "Hooded Justice" brutally stopping a grocery store robbery in the early 1950s.
The title Martial Feats of Comanche Horsemanship is an anagram of the title of the painting seen in Judd Crawford's house - Comanche Feats of Martial Horsemanship by George Catlin. It is an 1834-5 Oil on canvas painting by artist George Catlin. It depicts a young man from the Comanche Nation utilizing a war on horseback technique, where he can flexibly drop his body to the side of the horse while riding it, effectively dodging enemies. This painting can be seen hanging on the wall in the murdered police chief's home.
Henry Louis Gates Jr.: an expert in genealogy and black history, appears as himself as Secretary of the Treasury.