Northern Pacific steam locomotive 1178 at Duluth, Minnesota, on April 27, 1950. Number 1178 is a class G-2 built by Alco-Brooks in 1920. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 1702 at Duluth, Minnesota, on April 27, 1950. Number 1702 is a class W-3 built by Alco-Brooks in 1913. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 1734 at Duluth, Minnesota, on April 29, 1950. Number 1734 is a class W-3 built by Alco-Brooks in 1913. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 1774 at Duluth, Minnesota, on April 27, 1950. Number 1774 is a class W-3 built by Alco-Brooks in 1918. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 1837 at Duluth, Minnesota, on May 26, 1954. Number 1837 is a class W-5 built by Alco-Schenectady in 1923. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 1837 at Duluth, Minnesota, on May 26, 1954. Number 1837 is a class W-5 built by Alco-Schenectady in 1923. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 1846 at Duluth, Minnesota, on April 27, 1950. Number 1846 is a class W-5 built by Alco-Schenectady in 1923. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 1852 at Duluth, Minnesota, on April 27, 1950. Number 1852 is a class W-5 built by Alco-Schenectady in 1923. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 2430 at Duluth, Minnesota, on May 26, 1954. Number 2430 is a class T built by Alco-Brooks in 1907. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 602 at Duluth, Minnesota, in June 1916. Number 602 is a class N built by Baldwin in 1900. Photo by Charles R. Iles, J.M. Fredrickson collection. Other Subject Classes: steam locomotive in roster photo