Sourdough Express, operating facilities in Anchorage and Fairbanks, is a fourth generation family organization. Established in 1898, it’s one of the oldest and most distinguished transportation companies in Alaska. With the assistance of their capable employees, the company is committed to exploring new opportunities for this proud institution.
Sourdough Express

I got to thinking about an old friend that was leased to them during the pipeline boom and remembered him saying that they were around since the beginning of time. Don't know if they are non-union or not but either way they have been around for a few years.