In order to keep their maps from being copied, mapmakers used to (?) include a fake city so if their map was copied, they would have evidence. It’s all well and good until someone sees that map and names their business after the fake town. Even Google was fooled until recently.
The owners had seen Agloe on a map distributed by Esso, which owned scores of gas stations. Esso had bought that map from Lindberg and Alpers. If Esso says this place is called Agloe, the store folks figured, well, that’s what we’ll call ourselves. So, a made-up name for a made-up place inadvertently created a real place that, for a time, really existed. Rand McNally, one presumes, was found not guilty..