Northern Pacific steam locomotive 1621 at Tacoma, Washington, on July 03, 1935. Number 1621, a class W built by Alco-Brooks in 1907, is underway near the roundhouse. Photo by Herman Hunt, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 1621 at Tacoma, Washington, in 1947. Number 1621 is a class W built by Alco-Brooks in 1907. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, roster photo

Northern Pacific 1621, a class W 2-8-2, helps the Mobase Local out of the Half-Moon yard and up the hill at South Tacoma, Washington, in 1953. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, helper locomotive, freight train.

Northern Pacific steam locomotive 1621 at Tacoma, Washington, on September 08, 1955. Number 1621 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 1621 at Tacoma, Washington, on September 08, 1955. Number 1621 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 1625 at Tacoma, Washington, on July 27, 1937. Number 1625, a class W built by Alco-Brooks in 1907, is parked by the yard office in Tacoma. Photo by Herman Hunt, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roster photo

Northern Pacific steam locomotive 1633 at Tacoma, Washington, on April 04, 1940. Number 1633, a class W built by Alco-Brooks in 1907, leads a freight train through Reservation in Tacoma. Photo by Herman Hunt, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, freight train

A wood caboose trails Northern Pacific 1633, a class W, as it leads a westbound extra freight through Half-Moon yard in Tacoma, Washington, in 1942. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, freight train, wood caboose.

Northern Pacific 1633, a class W, leads a westbound extra freight through Half-Moon yard in Tacoma, Washington, in 1942. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, freight train, freight yard.

Northern Pacific steam locomotive 1655 at Tacoma, Washington, circa 1950. Number 1655, a class W-1 built by Alco-Brooks in 1907, is parked at the roundhouse. Photo by Blackie Moser, J.M. Fredrickson collection. Other Subject Classes: steam locomotive, roundhouse