Northern Pacific dispatchers office in Union Station at Tacoma, Washington, circa 1962. New "Double Track North" dispatcher's desk, communications panel. Photo by J.M. Fredrickson . Other Subject Classes: dispatchers office, communications equipment

Northern Pacific dispatchers office in Union Station at Tacoma, Washington, circa 1962. Worker installing new "Double Track North" dispatcher's desk, communications panel. Photo by J.M. Fredrickson . Other Subject Classes: dispatchers office, railroad employee, communications equipment

Northern Pacific dispatchers office in Union Station at Tacoma, Washington, in 1943. Three men at desks, with standard clock and other items. Other Subject Classes: dispatchers office, railroad employee

Northern Pacific dispatchers office in Union Station at Tacoma, Washington, circa 1942. Three men at desks, with standard clock and other items. Other Subject Classes: dispatchers office, railroad employee

Northern Pacific dispatcher Jim Fredrickson at Stampede, Washington, on January 21, 1959. Standing in snow shoes in heavy snow by abandoned car. Photo by J.M. Fredrickson . Other Subject Classes: railroad employee, mountains

Northern Pacific dispatch office at Portland, Oregon, on July 10, 1967. Concrete control tower. Photo by J.M. Fredrickson. Other Subject Classes: dispatch office

Northern Pacific 557, a GP7, leads the eastbound Auburn Local freight through Quendall, Washington, in 1952. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train, trestle bridge.

Northern Pacific 5407, an Electro-Motive Division FT, hauls scheduled freight number 675 across the Stillaguamish River bridge north (railroad west) of Arlington, Washington, in 1955. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train, truss bridge.

Northern Pacific 2502, a U25C, leads two sisters, 2505 and 2506 on eastbound freight number 600 across the viaduct at Sandpoint, Idaho, on April 15, 1965. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train.

Northern Pacific 2502, a U25C, leads two sisters, 2505 and 2506 on eastbound freight number 600 across the viaduct at Sandpoint Idaho, on April 15, 1965. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train.