The final episode of the 2nd season features some action around a train making it's way through a winter landscape. 

We catch a quick glimpse of Virginia & Truckee's 2nd #18 (originally McCloud River RR #18 and nearly identical to movie star McCloud #19), a 1914 Mikado still in use on the Virginia & Truckee Railway between Carson City and Virginia City, NV. It was repainted as "Northern Pacific #1770" for the show. 

Three of the steel-bodied passenger coaches used for filming (including the one Spencer rides in) are also in use on the line. 

The V&T train was shipped to Butte, MT for the big Livingston depot shootout, which was actually shot at historic Front Street Station.