With thanks to David Spragg, I closed out another Nevada town (Pahrump) with the acquisition of a $5 chip from the Cotton Pickin' Saloon (chipguide image because I'm too lazy to take a pic of mine, upload it to my computer, then post it here).

This leaves me with the following cities from which to get a single final chip. Maybe you have the one I need? If you want to know which specific chips/casinos I'm looking for, click the Nevada Want List link in my signature below.

Eureka
Pittman
Hawthorne
Caliente
Carson City
Contact
Elko
Fallon
Gardnerville
Goldfield
Henderson
Indian Springs
Mountain City
N. Lake Tahoe
Primm
Tonopah
Wells