Southern Pacific Railroad diesel locomotive 9310 in August 1975. SP 9310 and 8483 lead a westbound extra freight train in 1975. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train.

Southern Pacific Railroad diesel locomotive 9140 in August 1975. SP 9140 and 3226 on a westbound extra freight train in 1975. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train, railroad crew.

Southern Pacific American Locomotive Company type PA 6007 along with another type PA after cutting off the inbound Southern Pacific passenger train "Cascade" at Portland Union Station in 1959. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel, Depot-Passenger.

Southern Pacific 3822 on a transfer freight from Southern Pacific Railroad's Brooklyn Yard, train is about to enter Union Pacific Railroad's Albina Yard. in 1978. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel, Train-Freight.

Southern Pacific Baldwin switcher 1495 and Union Pacific SW switcher 1837 with transfer trains at the south end of Portland Union Station in 1962. Photograph by Alden Raney. Other subject classes: Locomotive-Diesel.

Southern Pacific Railroad Commuter train No. 112, lead by a Fairbanks-Morse locomotive, passes another commuter train at the at the Redwood City, California, depot on August 02, 1973. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train, passenger depot.

Southern Pacific diesel locomotives 3209 and 3203 at Tacoma, Washington on May 3, 1971. SP 3209 and 3203 lead Amtrak train number 12 into Tacoma in 1971. First trip. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotives, passenger train

Southern Pacific diesel locomotives 3204 and 3206 lead Amtrak train number 11 at San Jose, California on August 10, 1973. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotives, passenger train

Southern Pacific 6387 leads Northern Pacific train number 685, a Seattle-Portland scheduled freight through Reservation in Tacoma, Washington, on October 22, 1967. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train, trestle bridge.

Southern Pacific 6387 leads Northern Pacific train number 685, a Seattle-Portland scheduled freight by the Reservation tower in Tacoma, Washington, on October 22, 1967. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train, telegraph station.