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

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, workers hoist crate with Centralized Traffic Control equipment to platform roof. Photo by J.M. Fredrickson. Other Subject Classes: signal equipment, railroad employee, station

Northern Pacific signal equipment at Union Station, Tacoma, Washington, on December 11, 1967. New Centralized Traffic Control panel ready for movement into dispatchers office. Photo by J.M. Fredrickson . Other Subject Classes: signal equipment

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

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

Northern Pacific signal equipment, Union Station, Tacoma, Washington, December 11, 1967. Worker helping install new Centralized Traffic Control panel in dispatchers office. Photo by J.M. Fredrickson . Other Subject Classes: signal equipment, railroad employee, dispatchers office

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 semaphores, Marshall, Washington, April 13, 1968.

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 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 dispatchers office in Union Station at Tacoma, Washington, on January 8, 1968. "Mountain desk" with trainsheet, communications equipment including selective telephone to contact stations. Photo by J.M. Fredrickson . Other Subject Classes: dispatchers office, communications equipment

Northern Pacific dispatchers office in Union Station at Tacoma, Washington, on January 8, 1968. "Mountain desk" with trainsheet, communications equipment including direct station telephone. Photo by J.M. Fredrickson . Other Subject Classes: dispatchers office, communications equipment

Northern Pacific dispatchers office in Union Station at Tacoma, Washington, on January 8, 1968. "Double Track North desk" with trainsheet, communications equipment including direct station telephone. Photo by J.M. Fredrickson . Other Subject Classes: dispatchers office, communications equipment

Northern Pacific dispatchers office in CTC room, Union Station, Tacoma, Washington, on January 14, 1968. "Mountain desk" with trainsheet, communications equipment including direct station telephone. Photo by J.M. Fredrickson . Other Subject Classes: dispatchers office, communications equipment

Northern Pacific dispatchers office in CTC room, Union Station, Tacoma, Washington, on January 14, 1968. "Mountain desk" with trainsheet, communications equipment including direct station telephone. Photo by J.M. Fredrickson . Other Subject Classes: dispatchers office, communications equipment

Northern Pacific dispatchers office in Union Station at Tacoma, Washington, in August 1966, before remodel. Photo by J.M. Fredrickson . Other Subject Classes: dispatchers office

Northern Pacific dispatchers office in Union Station at Tacoma, Washington, in August 1966. Looking in from outside windows. Photo by J.M. Fredrickson . Other Subject Classes: dispatchers office,

Northern Pacific dispatchers office in Union Station at Tacoma, Washington, in August 1966, before remodel, with telephone and telegraph equipment. Photo by J.M. Fredrickson . Other Subject Classes: dispatchers office, telegraph, communications equipment

Northern Pacific dispatchers office in Union Station at Tacoma, Washington, in August 1966. Tacoma Division dispatchers (left-right)- R.D. Leary, John A. Haakonson, and C. W. Johnson, in their temporary desk location while offices were being remodeled. Photo by J.M. Fredrickson. Other Subject Classes: dispatchers office, railroad employees

Northern Pacific dispatchers office in Union Station at Tacoma, Washington, in August 1966. Tacoma Division dispatchers (left-right), R. D. Leary and C. W. Johnson, in their temporary desk location during remodeling. Photo by J.M. Fredrickson . Other Subject Classes: dispatchers office, railroad employee

Northern Pacific dispatchers office in Union Station at Tacoma, Washington, on October 30, 1966. Unidentified woman at desk. Photo by J.M. Fredrickson . Other Subject Classes: dispatchers office, railroad employee

Northern Pacific dispatchers office in Union Station at Tacoma, Washington, on October 30, 1966. Assistant Chief Dispatcher Raymond C. Smith, r., unidentified stenographer at desks during remodeling. Photo by J.M. Fredrickson . Other Subject Classes: dispatchers office, railroad employee

Northern Pacific dispatchers office in Union Station at Tacoma, Washington, in 1966. Communications equipment area during remodeling. Photo by J.M. Fredrickson . Other Subject Classes: dispatchers office

Northern Pacific dispatchers office in Union Station at Tacoma, Washington, in 1966. Unidentified employees during remodeling. Photo by J.M. Fredrickson . Other Subject Classes: dispatchers office, railroad employee

Northern Pacific dispatchers office in Union Station at Tacoma, Washington, in November 1966. Dimension shipment inspector Jack Allen in chair, Tacoma Division dispatchers Cameron Galbreath and Dick Noble standing. Photo by J.M. Fredrickson . Other Subject Classes: dispatchers office, railroad employee

Northern Pacific dispatchers office in Union Station at Tacoma, Washington, on October 30, 1966. Tacoma Division dispatcher Duke Tone at desk, telegraph and direct station telephone (box with buttons). Photo by J.M. Fredrickson . Other Subject Classes: dispatchers office, railroad employee, telegraph, communications equipment

Northern Pacific dispatchers office in Union Station at Tacoma, Washington, on October 30, 1966. Unidentified dispatcher at desk. Photo by J.M. Fredrickson . Other Subject Classes: dispatchers office, railroad employee

Northern Pacific dispatchers office in Union Station at Tacoma, Washington, on October 30, 1966. Unidentified woman at desk. Photo by J.M. Fredrickson . Other Subject Classes: dispatchers office, railroad employee

Northern Pacific dispatchers office in Union Station at Tacoma, Washington, on October 30, 1966. Dispatcher J. M. "Jack" Darragh at desk. Photo by J.M. Fredrickson . Other Subject Classes: dispatchers office, railroad employee