Two Northern Pacific GP-9 diesel locomotives with a local freight led by 211 on a branchline in Montana. GJ Werkema collection. Other subject classes: freight train, diesel locomotive

Two freight locomotives assist Amtrak diesel locomotives at Tacoma, Washington on January 2, 1972. Two Burlington Northern GP-9's leads Amtrak train number 198 toward Union Station at Tacoma in 1972. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Turbo Train 50 at King Street Station in Seattle, Washington in 1971. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Tidewater Southern Railway Alco RS-3 diesel locomotive number 746 parked at Modesto, California, on June 22, 1974. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, switching locomotive.

Tidewater Southern Railway Alco RS-3 diesel locomotive number 746 parked at Modesto, California, on June 22, 1974. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, switching locomotive

Tidewater Southern Railway Alco RS-3 diesel locomotive number 746 parked at Modesto, California, on June 22, 1974. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, switching locomotive

Tidewater Southern Railway Alco RS-3 diesel locomotive number 746 parked at Modesto, California, on June 22, 1974. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, switching locomotive, bay window caboose.

Tidewater Southern Railway Alco S-2 diesel locomotive number 745 parked at Sacramento, California, on August 3, 1973. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, switching locomotive.

Tidewater Southern Railway diesel locomotive 745 an American Locomotive Companies model S2 switcher, circa 1976. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive

Three Milwaukee Road diesel locomotives near Boylston, Washington, circa 1971. A MILW General Electric and two Electro Motive Division locomotives leading a westbound train out of the tunnel at Boylston, Washington. The photograph is undated, but was developed in June ,1971.