Northern Pacific steam locomotive 2687 at Staples, Minnesota, on April 28, 1950. Number 2687 is a class A-5 built by Baldwin in 1943. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 2687 at Staples, Minnesota, on April 28, 1950. Number 2687 is a class A-5 built by Baldwin in 1943. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 2688 with its insulation and metal covering removed for inspection at Livingston, Montana, in September 1952. Number 2688 is a class A-5 built by Baldwin in 1943. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 2689 at Staples, Minnesota, on April 28, 1950. Number 2689 is a class A-5 built by Baldwin in 1943. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 27 at Billings, Montana, on May 14, 1938. The crew of Number 27, a class Y-1 built by Schenectady in 1899, pose in the freight yard at Billings. Photo by Herman Hunt, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, freight yard, railroad crew

Northern Pacific steam locomotive 27 at Billings, Montana, on August 17, 1949. Number 27, a class Y-1 built by Schenectady in 1899, awaits the next assignment. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 27 at Billings, Montana, on August 17, 1949. Number 27, a class Y-1 built by Schenectady in 1899, switches a cut of cars. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, freight yard, railroad crew

Northern Pacific steam locomotive 271, circa 1925. Number 271 is a class P built by Schenectady in 1898. Photo by Ron V. Nixon, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 276 makes a passenger station stop at Brainerd, Minnesota, circa 1885. Number 276 is a class C-3, built by Baldwin in 1883. J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 28 at Butte, Montana, on August 16, 1949. Number 28, a class Y-1 built by Schenectady in 1899, switches a passenger consist. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, passenger car, railroad crew