Thanks for posting your photos Al P. !!
The stock cars are parked in the "most west" part of the Durango yards just past the smelter... The mountain seen is Smelter Mountain... Here's a shot of the end of those cars and one looking west from the end of those cars... The track ends where the RGS track began... and then disappeared forever...
Al P's second picture the train has just crossed Main Avenue, the dirt road later became Camino del Rio...
Al P's third picture is the B-2 Business car before it later became the Nomad located at what was the beginning stages of Perins Peak Trailer Park which is now know as Westside Mobile Home Park... Look closely at this photo for the B-2 in the front and the RGS tracks still in place across a recently paved Highway 160...
Photographers are unknown - Photos from the "Research On A Whim" collection...