The addresses on the envelope and the list of employees include a fictitious state code, PE, and ZIP codes in the 0745X range, which in reality are assigned to Bergen County, NJ. In one scene, the license plate of a car is clearly visible. The name of the state doesn't appear anywhere on the plate, but in the center of the plate is an image of Kier Eagan, and at the bottom is the Latin phrase "Remedium Hominibus": "A cure, for mankind." (Not "A cure for mankind" in the sense of mankind being a disease, which would be "Remedium Hominum.")
The episode won an Emmy Award for Outstanding Music Composition for a Series (Original Dramatic Score).
The map of the area they show is a map of Schenectady that has been changed. You can see neighborhoods such as Bellevue and Mount Pleasant.