Burlington Northern crew 10 with diesel locomotive 2507 moves under a cantilever signal bridge with a Holland America Westours full-dome passenger car at South Seattle, Washington, in 1987. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, car switching, signal equipment

Burlington Northern diesel locomotive 6474 at South Seattle, Washington, on April 26, 1971. Burlington Northern train 3, the Chicago to Seattle TOFC service named the Pacific ZIP, arrives for the first time at the South Seattle intermodal terminal with 6474, 6476 and 6481. Photo by J.M. Fredrickson. Other Subject Classes: freight train, diesel locomotive, people.

Burlington Northern diesel locomotive 6474 at South Seattle, Washington, on April 26, 1971. Officials prepare to commemorate Burlington Northern train 3, the Chicago to Seattle TOFC service called the Pacific ZIP led by 6474, 6476 and 6481, on its first arrival at the South Seattle intermodal terminal. Photo by J.M. Fredrickson. Other Subject Classes: freight train, diesel locomotive, people.

Burlington Northern diesel locomotive 6474 at South Seattle, Washington, on April 26, 1971. Officials prepare to commemorate Burlington Northern train 3, the Chicago to Seattle TOFC service called the Pacific ZIP led by 6474, 6476 and 6481, on its first arrival at the South Seattle intermodal terminal. Photo by J.M. Fredrickson. Other Subject Classes: freight train, diesel locomotive, people.

Burlington Northern diesel locomotive 6474 at South Seattle, Washington, on April 26, 1971. Officials prepare to commemorate Burlington Northern train 3, the Chicago to Seattle TOFC service called the Pacific ZIP led by 6474, 6476 and 6481, on its first arrival at the South Seattle intermodal terminal. Photo by J.M. Fredrickson. Other Subject Classes: freight train, diesel locomotive, people.

Burlington Northern diesel locomotive 6474 at South Seattle, Washington, on April 26, 1971. Burlington Northern train 3, the Chicago to Seattle TOFC service named the Pacific ZIP, arrives for the first time at the South Seattle intermodal terminal with 6474, 6476 and 6481. Photo by J.M. Fredrickson. Other Subject Classes: freight train, diesel locomotive, people.

Burlington Northern diesel locomotive 6474 at South Seattle, Washington, on April 26, 1971. Burlington Northern train 3, the Chicago to Seattle TOFC service named the Pacific ZIP, arrives for the first time at the South Seattle intermodal terminal with 6474, 6476 and 6481. Photo by J.M. Fredrickson. Other Subject Classes: freight train, diesel locomotive, people.

Burlington Northern diesel locomotive 6481 at South Seattle, Washington, on April 26, 1971. The power from train 3 connects to a Burlington Northern executive train and prepares to head south from South Seattle after the first arrival of train 3. Train 3 was named the "Pacific Zip" and provided fast piggy back service to the northwest. Photo by J.M. Fredrickson. Other Subject Classes: passenger train, diesel locomotive.