United States Army Alco RSD-1 diesel locomotive number 8015 (construction number 70636, built in 1942) parked at the Northern Pacific's engine facility at Auburn, Washington, in 1948. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive.

Walla Walla Valley Railway diesel locomotive 775 at Auburn, Washington in 1950. Walla Walla Valley 775, formerly Northern Pacific number 126 class SW660, built by Alco, 1940. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, roster shot

Walla Walla Valley Railway diesel locomotive 775 at Auburn, Washington on August 19, 1953. Walla Walla Valley 775, formerly Northern Pacific number 126 class SW 660, built by Alco, 1940. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, roster shot

Western Pacific Railroad diesel locomotive 3007 at Auburn, Washington in March 1978. This engine was wrecked in a head on collision in South Seattle. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, accident.

Western Pacific Railroad diesel locomotive 3007 at Auburn, Washington in March 1978. This engine was wrecked in a head on collision in South Seattle. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, accident.