At the end of the episode, Jeff asks the narrator "weren't you in The Cape?" Although the narrator says no, Keith David, who provides the narration for this episode, actually was a regular on The Cape.
The structure, style, and music used in this episode are parodies of the documentary films of Ken Burns, especially his 1990 five-night epic account of the Civil War. This reference is extended all the way to the PBS-style pledge drive plea for donations after the end credits.
The picture of "English Memorial" (the Portuguese sailor that discovered Greendale while looking for a fountain that cured syphilis) is actually a picture of the shows creator, Dan Harmon made to look like a renaissance painting.