O.K. If I can get this to work below should be a link to a video on the Silverton in 1952. Shows a true mixed freight. Along the way there are Indians at the Guest ranch riding horses along side the train. In Silverton you see the "painted cars" with the San Juan green closed vestibule coaches.
Be sure to check out the other videos posted by trailertrane. There is one titled "Marshall Pass 1952", but I think it is along the Rio Grande Southern, as 464 pulls a frieght with RGS short wheelbase caboose 400. then it ends with 491 and 497 at Sargents.
Also there is one titled "Tennessee Pass 1952" Shows great footage of a Steam Passenger train with a helper. Really GREAT stuff here.
This is not my footage, but I came across it looking for something else. I thought maybee you guys would like looking at it as well.
Dan Hetzel