Union Pacific F-units 1472 and 1472C on a northbound freight at Vancouver in 1962. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel.

Union Pacific type NW2 1071 and another Union Pacific switcher working the southend of the yard at Portland Union Station in 1959. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel.

Union Pacific type GP9 106 heads a short freight from Seattle and shortly will cross over the Columbia River Bridge at Vancouver in 1962. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel.

Union Pacific diesel switcher 1217 moving train number 6 at Salt Lake City, Utah on September 13, 1985. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Union Pacific 141C leads time freight, number 692 on the last day of operation at McCarver Street station in Tacoma, Washington, on April 06, 1962. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train, telegraph station.

Union Pacific (UP) diesel locomotive 3072 at Tacoma, Washington, on April 21, 1973. UP train 691, led by UP 3072, Burlington Northern 6320 and UP 3002 near UP Junction. Photo by J.M. Fredrickson. Other Subject Classes: freight train, diesel locomotive.

Union Pacific (UP) diesel locomotive 3072 at Tacoma, Washington, on April 21, 1973. UP train 691 led by UP 3072, Burlington Northern 6320 and UP 3002 leave the Burlington Northern mainline at UP Junction. Photo by J.M. Fredrickson. Other Subject Classes: freight train, diesel locomotive.

Union Pacific diesel locomotive at Tacoma, Washington, on April 21, 1973. Number 3072, an SD40, along with Burlington Northern SD40 number 6320, pass under the 11th Street overpass. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Union Pacific Railroad accident at Pioneer Pit between Tacoma and Steilacoom, Washington, on April 19, 1972. The series of photos show scenes of the gravel pit facility and rail cars involved. Photo by J.M. Fredrickson. Other Subject Classes: accident.

Unidentified General Electric (GE) 45 ton diesel locomotive with side-rods, circa 1960, is parked at an unknown location. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, industrial locomotive.