The Fireman is shoveling coal into the firebox at dawn on Ferguson's Trestle on the Cumbres and Toltec Railroad.

Denver and Rio Grande Western No. 168 is a class "T-12" 4-6-0 “Ten-Wheeler” type narrow-gauge steam railway locomotive. It is one of twelve similar locomotives built for the Denver and Rio Grande Railroad (D&RG) by the Baldwin Locomotive Works in 1883.