Northern Pacific steam locomotive 2500 at Mandan, North Dakota, on April 26, 1950. Number 2500 is a class W-4 built by Alco-Brooks in 1906. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 2459 at Mandan, North Dakota, on April 26, 1950. Number 2459 is a class T-1 built by Alco-Brooks in 1907. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 2454 at Jamestown, North Dakota, on May 21, 1952. Number 2454 is a class T-1 built by Alco-Brooks in 1907. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 2437 at Mandan, North Dakota, on July 31, 1934. Number 2437, a class T built by Alco-Brooks in 1907, is parked in the deadline. Photo by Herman Hunt, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, deadline

Northern Pacific steam locomotive 2233 at Jamestown, North Dakota, on July 30, 1934. Number 2233, a class Q-5 built by Alco-Brooks in 1920, waits at the Jamestown Depot to replace the power of an arriving passenger train while 1513 brings a freight by the station in1934. Photo by Herman Hunt, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 2192 at Jamestown, North Dakota, on May 27, 1954. Number 2192 is a class Q-4 built by Baldwin in 1909. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 2182 at Mandan, North Dakota, on September 14, 1946. Number 2182 is a class Q-4 built by Baldwin in 1909. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 1917 in the deadline at Mandan in North Dakota, circa 1957. Number 1917 is a class W-2 built by Alco-Brooks in 1904. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 1915 at Dickinson, North Dakota, on July 25, 1934. Number 1915, a class W-2 built by Alco-Brooks in 1904, moves onto the turntable. Photo by Herman Hunt, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, turntable

Northern Pacific steam locomotive 1908 at Mandan, North Dakota, on September 14, 1946. Number 1908 is a class W-2 built by Alco-Brooks in 1904. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo