Western Pacific 4-6-0 # 85 at Portola California in 1938., a photo by Eddie from Chicago on Flickr.
I found this photo at My Link page Yesteryear Depot.Com, located to the right of Your computer screen.
The western Pacific Railroad began operations in 1910, and was a large user of the 4-6-0 Ten Wheeler type of steam locomotive.
This photo was taken at the western Pacific Railroad's Portola yard and shops facility in Portola California.
Today, the Portola California WP site, is the site of todays Western Pacific Railroad Museum in northern California.