Northern Pacific steam locomotive 227 leads the Grays Harbor morning train at Black River, Washington, on April 10, 1939. Built in 1902, the P-1 Ten-Wheeler was scrapped at South Tacoma the year after this photo was taken. Photo by J.A. Turner. Other Subject Classes: steam locomotive, passenger train

Northern Pacific steam locomotive 227 leads a passenger train south of King Street station at Seattle, Washington, circa 1925. The P-1 Ten-Wheeler was built by the American Locomotive Company in Schenectady, New York, in 1902, and scrapped in South Tacoma, Washington, in 1940. Photo by J.A. Turner. Other Subject Classes: steam locomotive, passenger train

Northern Pacific steam locomotive 227 at Seattle, Washington, on September 11, 1935. Number 227, a class P built by Schenectady in 1898, is parked near the Seattle roundhouse. Photo by Herman Hunt, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 23 at Butte, Montana, on August 19, 1949. Number 23, a class Y-1 built by Schenectady in 1899, passes through the yard. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, freight yard

Northern Pacific steam locomotive 23 at Helena, Montana, on May 24, 1952. Number 23, a class Y-1 built by Schenectady in 1899, backs by the depot. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, passenger depot

Northern Pacific steam locomotive 23 at Helena, Montana, on September 15, 1953. Number 23, a class Y-1 built by Schenectady in 1899, awaits its next switching assignment at the roundhouse. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, water column

Northern Pacific steam locomotive 2315 at Livingston, Montana, on August 18, 1949. Number 2315 is a class T built by Alco-Brooks in 1906. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 2315 at Staples, Minnesota, on April 28, 1950. Number 2315 is a class T built by Alco-Brooks in 1906. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 2318 poses with its crew and a freight train, circa 1910. Number 2318 is a class T built by Alco-Brooks in 1906. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 232 at East Auburn, Washington, in 1920. The crew of Number 232, a class P-1 built by Schenectady in 1899, pose with their locomotive at the East Auburn station platform. Photo by Herman Hunt, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, passenger depot, railroad crew