Here is more information from Garr Norick:
You said you have only seen 2 Towne Pump stations. I know of two more that
still exist. There is a Towne Pump Station in Newport, Oregon, and one
in Philomath, Oregon. Until about a year ago, there was also a Towne Pump
in Toledo, Oregon, my hometown. And in most cases, Towne Pump usually
seems to have the least expensive gas in town!