Northern Pacific roundhouse at Lester, Washington, circa 1914. Brick engine house with six Class Y Consolidation-type steam locomotives in stalls, roundhouse workers. J.M. Fredrickson collection. Other Subject Classes: roundhouse, steam locomotive, railroad employee

Northern Pacific roundhouse (owned by the Burlington Northern since March 1, 1970) at Missoula, Montana, April 10, 1971.

Northern Pacific roundhouse (owned by the Burlington Northern since March 1, 1970) at Missoula, Montana, April 10, 1971.

Northern Pacific roundhouse (owned by the Burlington Northern since March 1, 1970) at Missoula, Montana, April 10, 1971.

Northern Pacific roundhouse at Seattle, Washington, circa 1960. Photo by J.M. Fredrickson . Other Subject Classes: roundhouse

Northern Pacific roundhouse at Tacoma, Washington, circa 1938. With turntable, blow-down towers. Photo by Herman Hunt, J.M. Fredrickson collection. Other Subject Classes: roundhouse, turntable, water column

Northern Pacific roundhouse at Tacoma, Washington, circa 1940. Roundhouse complex with water tanks, cinder pit. Photo by Herman Hunt, J.M. Fredrickson collection. Other Subject Classes: roundhouse, water tank, cinder pit

Northern Pacific roundhouse at Tacoma, Washington, circa 1938. With turntable, standpipe. Photo by Herman Hunt, J.M. Fredrickson collection. Other Subject Classes: roundhouse, turntable, water column

Northern Pacific scale house at Seattle, Washington, circa 1948. Small frame railroad building at Dravis Street/Interbay, signal, employees. Photo by J.M. Fredrickson . Other Subject Classes: scale house, signal, railroad employee

Northern Pacific section house and workers at Easton, Washington Territory, in 1887. New frame living quarters, section workers gathered in front. Photo by I.G. Davidson, J.M. Fredrickson collection.. Other Subject Classes: section house, railroad employee

Northern Pacific section house at Canyon Spur, Washington Territory, 1887. Frame living quarters with section workers, families, men on handcar, newly-laid mainline. Photo by I.G. Davidson, J.M. Fredrickson collection.. Other Subject Classes: section house, railroad employees, people, handcar, track

Northern Pacific section house at Frances, Washington, circa 1915. Frame two-story house and outbuildings beside track. Copy of postcard. J.M. Fredrickson collection. Other Subject Classes: section house

Northern Pacific section house at Martin, Washington, circa 1948. Frame two-story structure, caboose in distance, in snow. Photo by Lee Nordquist, J.M. Fredrickson collection.. Other Subject Classes: section house, caboose, mountains

Northern Pacific semaphore display at the Northwest Railway Museum in Snoqualmie, Washington, on July 20, 2005. Photo by GJ Werkema. Other subject classes: Signal, Semaphore.

Northern Pacific semaphore signal display at Chehalis, Washington, on April 8, 1988. This structure is in the 3rd subdivision of the Tacoma division. Photo by GJ Werkema. Other subject classes: Signal, Semaphore

Northern Pacific semaphores, Marshall, Washington, April 13, 1968.

Northern Pacific shops at South Tacoma Washington, circa 1935. Brick shops buildings, Class Q-5 Pacific-type steam locomotive number 2238 parked in front after overhaul. Overhead view. J.M. Fredrickson collection. Other Subject Classes: repair shop, steam locomotive

Northern Pacific shops at South Tacoma, Washington, circa 1935. Interior of machine shop showing machinery and belts used for repair work. Photo by J.M. Fredrickson collection. Other Subject Classes: repair shop, railroad equipment

Northern Pacific shops at South Tacoma, Washington, circa 1938. Interior of rebuild shop with Class W Mikado-type steam locomotive number 1529, Class Q-4 Pacific number 2193, and three other locomotives being overhauled. J.M. Fredrickson collection. Other Subject Classes: repair shop, steam locomotive

Northern Pacific shops at South Tacoma, Washington, circa 1927. Aerial view of shops complex. J.M. Fredrickson collection. Other Subject Classes: repair shops, aerial photo

Northern Pacific shops at South Tacoma, Washington, circa 1942. Distant view of complex looking east from hill. Photo by J.M. Fredrickson. Other Subject Classes: repair shop

Northern Pacific shops at South Tacoma, Washington, circa 1942. Distant view of complex looking east from hill. Photo by J.M. Fredrickson. Other Subject Classes: repair shop

Northern Pacific shops at South Tacoma Washington, in 1891. New repair shop building with wheel parts. J.M. Fredrickson collection. Other Subject Classes: repair shop, railroad equipment

Northern Pacific shops at South Tacoma Washington, in 1891. New shops buildings, yard, mainline. J.M. Fredrickson collection. Other Subject Classes: repair shop, railroad yard, track

Northern Pacific shops at South Tacoma, Washington, in 1891. Exterior of new repair building, yard, wheels in storage. J.M. Fredrickson collection. Other Subject Classes: repair shop, railroad yard, railroad equipment

Gate sign for Northern Pacific North Coast Limited at King Street Station, Seattle, Washington, May 15, 1955. Photo by J.M. Fredrickson. Other Subject Classes: sign, passenger station

Northern Pacific signal bridge at Martin, Washington, circa 1960. Signal bridge with three signal masts, mainline, east portal of Stampede Tunnel in snow. Photo by J.M. Fredrickson . Other Subject Classes: signal equipment, track, tunnel, mountains

Northern Pacific signal equipment, Union Station, Tacoma, Washington, December 11, 1967. Outside of station with workers hoisting crate with Centralized Traffic Control equipment to platform roof. Photo by J.M. Fredrickson . Other Subject Classes: signal equipment, station, railroad employee

Northern Pacific signal equipment, Union Station, Tacoma, Washington, December 11, 1967. Outside of station with workers hoisting crate with Centralized Traffic Control equipment to platform roof. Photo by J.M. Fredrickson . Other Subject Classes: signal equipment, station, railroad employee

Northern Pacific signal equipment, Union Station, Tacoma, Washington, December 11, 1967. Workers installing new Centralized Traffic Control panel in dispatchers office; A. T. Brumfield, far right. Photo by J.M. Fredrickson . Other Subject Classes: signal equipment, railroad employee, dispatchers office