Probably the two best known individual cars of the Rio Grande Zephyr were the dome observation car, Silver Sky, and the dining car, Silver Banquet.
Here's Silver Sky:
And here is Silver Banquet:
Of course, the four dome cars were an essential element of the train:
And a couple of additional photos:
The unit behind the F9A in the next to last photo is the steam generator unit pictured above.
I don't know if this image is authentically from D&RGW, but it sure caught my eye:
