View of Denver, Northwestern & Pacific Railway (later Denver & Salt Lake) Hill Hell, "Loop", wooden trestle and tunnel number 33, Moffat Road, Colorado; passenger train crossing over trestle and another passenger train approaching tunnel; standard...
Railroads--Colorado--1900-1920.; Trestles--Colorado--1900-1920.; Tunnels--Colorado--1900-1920.; Denver, Northwestern and Pacific Railway.
[between 1904 and 1913]
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