Northern Pacific steam locomotive 3015 in switching service at Tacoma, Washington, circa 1918. Number 3015 is a class Z built by Baldwin in 1907 J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 307 at Cole, Washington, circa 1887. Number 307 (old number series) was built by Baldwin in December 1871. The crew poses with the locomotive on the Stampede Pass line on the west side of the summit. J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roster photo

The train crew wait with Northern Pacific 307 (old number) at Cole siding just west of Borup on the Stampede line, circa 1887. J.M. Fredrickson collection. Other Subject Classes: freight train, steam locomotive, railroad crew.

Northern Pacific steam locomotive 31 at Helena, Montana, on June 06, 1955. Number 31, a class Y built by Schenectady in 1898, poses with rods down near the passenger depot. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, passenger car

Northern Pacific steam locomotive 3101 at Wallace, Idaho, on September 25, 1916. Number 3101 is a class Z-1 built by Baldwin in 1910. Photo by Charles R. Iles, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 32 at Missoula, Montana, on August 24, 1943. Number 32, a class Y built by Schenectady in 1898, is parked near the coal dock. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 321, circa 1946. Number 321 is a class S-10 built by Alco-Rogers in 1907. Photo by Albert Farrow, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 322 in 1916. Number 322 is a class S-10 built by Alco-Rogers in 1907. Photo by Charles R. Iles, J.M. Fredrickson collection. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 328 at Brainerd, Minnesota, on May 27, 1954. Number 328 is a class S-10 built by Alco-Rogers in 1907. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo

Northern Pacific steam locomotive 328 at Rush City, Minnesota, on May 01, 1950. Number 328 is a class S-10 built by Alco-Rogers in 1907. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive in roster photo