Amtrak diesel locomotive 6704C at Tacoma, Washington on March 10, 1970. Northern Pacific 6704C leads Amtrak train number 198 at McCarver Street in Tacoma in 1970. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 635, an EMD SDP40F at Tacoma, Washington on August 4, 1980. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 635, an EMD SDP40F at Union Station in Tacoma, Washington in November 1979. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 635 - 573, are EMD model SDP40F at Tacoma, Washington in November 1979. They are on train number 11. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 617, an EMD SDP40F at Tacoma, Washington in June 1979. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 573 at Tacoma, Washington, circa 1978. Amtrak 573 leads train number 14 at Continental Grain dock in Tacoma. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 567, an EMD SDP40F at Tacoma, Washington on September 10, 1974. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 558 at Tacoma, Washington in April 1975. Locomotive 558 makes a station stop with train number 14 at Union Station in Tacoma in 1975. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train

Amtrak diesel locomotive 555, an EMD SDP40F at Tacoma, Washington on October 7, 1976. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, passenger train