Electro-Motive Division of General Motors diesel locomotive 4353, an SD-45 demonstrator unit, sits at the Northern Pacific diesel house in Auburn Washington before testing on Stampede Pass on April 28, 1966. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive

Electro-Motive Division of General Motors diesel locomotive 4353, an SD-45 demonstrator unit, sits at the Northern Pacific diesel house in Auburn Washington before testing on Stampede Pass on April 28, 1966. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive

Electro-Motive Division of General Motors diesel locomotive 4353, an SD-45 demonstrator unit, sits at the Northern Pacific diesel house in Auburn Washington before testing on Stampede Pass on April 28, 1966. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive

Electro-Motive Division of General Motors diesel locomotive 4352, an SD-45 demonstrator unit, sits at the Northern Pacific diesel house in Auburn Washington before testing on Stampede Pass on April 28, 1966. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive

Colorado and Southern Railway diesel locomotive 951 at Auburn, Washington, circa 1978. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive

Colorado and Southern Railway diesel locomotive 916 connected to Burlington Northern 5333 at Auburn, Washington on August 03, 1972. , Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive

Colorado and Southern Railway diesel locomotive 916 at Auburn, Washington on August 03, 1972. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive

Colorado and Southern Railway diesel locomotive 910 connected to Burlington Northern 6919 at Auburn, Washington on August 03, 1972. The Auburn turntable and roundhouse are visible in the background. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive

Colorado and Southern Railway diesel locomotive 908 on a train in Auburn, Washington on April 17, 1972. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive

Colorado and Southern Railway diesel locomotive 902 on a siding in Auburn, Washington in December 1974. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive