The Southwest Chief travels between Los Angeles and Chicago. It leaves LA at 6:45 pm and arrives at 3:20 pm in Chicago two days later.
Here, at Amtrak's website, you can view a map of the route. I didn't take many pictures on my trip because train windows tend to be smudged and things whip past while you list from side to side, but here are a few:
A storm over Kansas as night falls.

Earlier, golden plains catch the last rays of sunlight.

The fantastical spires of Trinidad, Colorado.