Greg:
Would be interested in the C&S as that line runs only a few blocks from where I work. I saw C&S steam in 59 while I was attending the Air Force photo school in Denver. Did not get any photos as I was not allowed to use Air Force equipment off the base and my salary was too low to afford a camera of my own.
I think Cheyenne had a tt like that also, but just relying on memory for that one.
Those 900s were huge. Jack Thode and John Maxwell attended Colorado State University where the C&S main line runs right through the campus and they told of having to stop classes when one of them came through. Even in the 70s when I was attending CSU, we would have to stop when a C&S train with three SD40s came blasting through.