Three Milwaukee Road diesel locomotives near Boylston, Washington, circa 1971. A Milwaukee Road (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.

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

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 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.

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

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

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