This is an image I took quite some time ago at my first visit to the Colorado Railroad Museum. This is a scan from a print so had to be around 1990. This is Denver, Leadville & Gunnison RR 2-8-0 Consolidation type locomotive built in the 1880s. It is the oldest locomotive in the museum collection and they did a feature on it recently during their virtual tours. The video can be found on Youtube here.