Northern Pacific engineering offices on Stampede Pass, Washington Territory, 1887. "Old headquarters," camp 1, frame buildings with children. Photo by I.G. Davidson, J.M. Fredrickson collection.. Other Subject Classes: construction camp, people

Northern Pacific mainline at Stampede Pass, Washington Territory, in 1887. Three levels of track at summit of switchback, frame section house. Photo by I.G. Davidson, J.M. Fredrickson collection.. Other Subject Classes: track, switchback, section house, mountains

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

Pacific Coast Railroad servicing facilities at Maple Valley, Washington, circa 1935. Frame two-story section house and water tank. Other Subject Classes: railroad servicing facilities.

Pacific Coast Railroad steam locomotive number 15 at Seattle, Washington, on June 15, 1950. PC 15 leaving the turntable in Seattle. Photo by Tom Kroutz. Other Subject Classes: steam locomotive, turntable.