Northern Pacific steam locomotive 5116 at Paradise, Montana, in September 1953. Number 5116 is a class Z-6 built by Alco-Schenectady in 1937. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 2607 waits to couple onto its next train at Paradise in Montana, circa 1948. Number 2607 is a class A built by Alco-Schenectady in 1926. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 2238 waits for its next train at Paradise in Montana, circa 1954. Number 2238 is a class Q-5 built by Alco-Brooks in 1920. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 2238 waits for its next train at Paradise in Montana, circa 1954. Number 2238 is a class Q-5 built by Alco-Brooks in 1920. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 1912 at Paradise, Montana, on May 20, 1951. Number 1912 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 1667 at Paradise, Montana, on May 29, 1954. Number 1667 is a class W-1 built by Alco-Brooks in 1910. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 1667 at Paradise, Montana, on September 06, 1953. Number 1667 is a class W-1 built by Alco-Brooks in 1910. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 1662 at Paradise, Montana, on August 20, 1943. Number 1662 is a class W-1 built by Alco-Brooks in 1910. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 1639 at Paradise, Montana, on May 23, 1951. Number 1639 is a class W built by Alco-Brooks in 1907. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 1639 at Paradise, Montana, on April 24, 1950. Number 1639 is a class W built by Alco-Brooks in 1907. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo