It was about thirty years ago; my last trip running what became of "the Streamliner," AMTK No's 5 and 6.
The Streamliner is alongside the Truckee (truckee is an attempt to say and spell the name of a native American tribe's CEO of the time of building the CP) river.
3 miles west of Verdi (ver-die) is a good guess. My pondering starts with the lack of shadows from the trees indicating, because it's when the sun beams from the south and the tracks are predominately on the river's east shore, and left-hand running existed, I was told, makes me think that the picture was taken during a PR event east of Truckee.
A major locater, though, is that the two tracks between a point east of Verdi and near Truckee were on different grades. In this photo the fact that they are together might zero-in the locality.
In '86 Amtrak hired, and I turned it down, when they said work the Los Angeles Extra List, or give up your rights---I did.
So, I, tho' I've been there and done that, can't identify thr location.
I owned the Coast Starlight on my seniority and they gave me the LA extra list???