I wonder what "Auburn" that was? It doesn't really look like a Califunny license plate. But the detail is poor and I really can't tell for sure.
My mother lived there as a child. Black Diamond was a coal mining town owned by Pacific coast coal.
The stages ran from black Diamond to the town of Auburn where you could catch the train and go either to Seattle or Tacoma.
Today Black Diamonds only claim to fame is the bakery. They still use the brick ovens that were built over 100 years ago. Tier pastries are worth the trip.
I used to live in both Auburn & Black Diamond !
What a cool photo !
Notice that the spare tire carrier appears to be the top iron on the front car.
It almost looks like a painting doesnt it?
Interesting that the front fender has the crown, yet the rear fender does not. Must've beat up the rear one and replaced it with an earlier fender.