Photo of Construction Number 1554 showing left side of Northern Illinois Coal Corporation 42 Ton, Two Truck Heisler Geared Steam Locomotive Number 201 at Wilmington, Illinois while hopper cars are being loaded with coal.

Builder photo showing left side of Northern Illinois Coal Corporation 55 Ton, Two Truck Heisler Geared Steam Locomotive Number 203 at Erie, Pennsylvania, 1935. This locomotive Photograph by Schauble. was used for coal mining near Wilmington, Illinois.

Northern Pacific steam locomotive 1098 switches a cut of freight cars on the waterfront in Seattle, Washington, circa 1940. The L-9 Switcher was built in 1907. Photo by J.A. Turner. Other Subject Classes: steam locomotive , freight train

Northern Pacific steam locomotive 1263 prepares to lead a freight train at Argo, Washington, on October 11, 1924. The Y-2 Consolidation was built in 1902 and scrapped at South Tacoma, Washington, in 1945. Photo by J.A. Turner. Other Subject Classes: steam locomotive , freight train

Northern Pacific steam locomotive 1507 leads a freight train south of downtown Seattle, Washington, circa 1925. King Street Station and the Smith Tower are in the background. Photo by J.A. Turner. Other Subject Classes: steam locomotive , freight train

Northern Pacific steam locomotive 1566 leads a freight train off the bridge at Fremont in Seattle, Washington, circa 1935. The Class W Mikado was built in 1906 and scrapped in 1953 at South Tacoma, Washington. Photo by J.A. Turner. Other Subject Classes: steam locomotive , freight train

Northern Pacific steam locomotive 1602 leads a freight train at Renton, Washington, in 1931. The Class W Mikado was built in 1906 and scrapped at South Tacoma, Washington, in 1932. Photo by J.A. Turner. Other Subject Classes: steam locomotive, freight train

Northern Pacific steam locomotive 1621 leads a local freight train through tunnel at Ostrander, Washington, circa 1925. The Class W Mikado was built in 1907 and scrapped at South Tacoma, Washington, in 1959. Photo by J.A. Turner. Other Subject Classes: steam locomotive , freight train

Northern Pacific steam locomotive 1682 leads a freight train past a semaphore signal near Black River, Washington, circa 1925. The W-1 Mikado was built in 1910. Photo by J.A. Turner. Other Subject Classes: steam locomotive , freight train

Northern Pacific steam locomotive 1840 leads a freight train at Auburn, Washington, circa 1925. The W-5 Mikado was built in 1923 and scrapped in 1956. Photo by J.A. Turner. Other Subject Classes: steam locomotive , freight train