Looks like a well used challenger. No photographer listed on slide.
An empty hopper train heads west between Lurich and Glen Lyn.
This eastbound stacker will recrew in Las Vegas, about 30 minutes away.
A brand-new locomotive crosses a 95-year-old bridge as this UP freight enters Iowa. Fuji Astia 100, Olympus OM-4, Zuiko 300mm f4.5