Northern Pacific Class Z-3 steam locomotive number 4014 backs to connect to a freight train in the yard at Auburn, Washington, circa 1928. Photo by J.A. Turner. Other Subject Classes: steam locomotive,

Northern Pacific Class Z-3 steam locomotive number 4014 moves forward through the yard at Auburn, Washington, circa 1928. Photo by J.A. Turner. Other Subject Classes: steam locomotive, freight yard

Northern Pacific Class Z-3 steam locomotive number 4011 leads a westbound freight train near Martin, Washington, circa 1925. Photo by J.A. Turner. Other Subject Classes: steam locomotive, freight train

Northern Pacific Class Z-3 steam locomotive number 4006 leads an eastbound freight train toward the station at New Stampede, Washington, circa 1928. Photo by J.A. Turner. Other Subject Classes: steam locomotive, freight train

Northern Pacific Class Z-3 steam locomotive number 4006 leads an eastbound freight train toward the station at New Stampede, Washington, circa 1928. Photo by J.A. Turner. Other Subject Classes: steam locomotive, freight train

Northern Pacific Class Z-3 steam locomotive number 4009 moves forward to connect as a helper for a westbound freight train over Stampede Pass at Easton, Washington, circa 1928. Photo by J.A. Turner. Other Subject Classes: steam locomotive,

Northern Pacific Class Z-3 steam locomotive number 4009 is connected to the headend of an eastbound freight train in the yard at Auburn, Washington, circa 1928. Photo by J.A. Turner. Other Subject Classes: steam locomotive, freight yard

Northern Pacific Class Z-3 steam locomotive number 4009 is connected to the headend of an eastbound freight train in the yard at Auburn, Washington, circa 1928. Photo by J.A. Turner. Other Subject Classes: steam locomotive, freight yard

Northern Pacific Class Z-3 steam locomotive number 4008 leads a westbound freight train under the highway bridge at Kanaskat, Washington, on July 25, 1937. Photo by J.A. Turner. Other Subject Classes: steam locomotive, freight train

Northern Pacific Class Z-3 steam locomotive number 4006 leads an eastbound freight train toward the station at New Stampede, Washington, on June 26, 1926. Photo by J.A. Turner. Other Subject Classes: steam locomotive, freight train