Some things Elizabeth told me about these characters:
This mining town is based on Kennecott, Alaska. Admittedly, lately I've been loosely tracing reference photos when I have to do a complicated background in a small amount of time. It's nothing too ridiculous: just general shapes of hills and rooflines. I'll pull the photo off to the side and fill in all of the details myself. Here's the photo I referenced for the fourth panel.