You are in the CarrTracks website Picture Gallery.
While Jack's train was entering the siding at Thoreau, an eastbound train rolls by on the north track. Engine 3255 is a Baldwin 2-8-2 built around 1920. That sure looks like a short tender compared to those used by the more powerful 4-8-4s and 2-10-2s. Seems like you would always be stopping for water.
Jack got of the front of the caboose near the switch in order to catch a picture of the conductor on the rear platform.
The train is in the siding at Thoreau to clear the Super Chief. At that time, the Super Chief operated twice a week and was pulled by three new E6 locomotives. These were built by Electromotive in 1940.