Northern Pacific diesel locomotive number 155 at the engine facility at Auburn, Washington, circa 1946. First NP 155 is a RS-1 built by American Locomotive Company in 1945. The unit was renumbered to 800 in 1950. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, switcher locomotive

Northern Pacific diesel locomotive number 159 in the engine facility at Auburn, Washington, circa 1949. NP 159 is a VO 1000 built by Baldwin in 1945 and was renumbered to 412 in 1950. A 1000 hp engine was installed in this unit in 1957 by EMD. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, switcher locomotive

Northern Pacific diesel locomotive number 159 in a yard the Auburn, Washington, circa 1949. NP 159 is a VO 1000 built by Baldwin in 1945. This unit was renumbered to 412 in 1950 and rebuilt by Electro Motive Division of General Motors Company with a new 1000 hp engine in 1957. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, switcher locomotive

Northern Pacific diesel locomotive number 161 in the engine facility at Auburn, Washington. NP 161, an Electro Motive Division of General Motors Company SW1200 diesel, was built in July 1957. It was the second NP switcher number 161, replacing a Baldwin VO-1000 that was renumbered to 412. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, switcher locomotive

Northern Pacific diesel locomotive number 169 in the engine facility at Auburn, Washington, on July 10, 1946. NP 169 is a VO 1000 built by Baldwin in 1945. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, switcher locomotive

Northern Pacific diesel locomotive number 214 in the engine facility at Auburn, Washington, on July 24, 1967. NP 214 is a GP-9 built by Electro Motive Division of General Motors Company in 1955. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, road switcher

Northern Pacific diesel locomotive number 214 in the engine facility at Auburn, Washington, on September 14, 1970. NP 214 is a GP-9 built by Electro Motive Division of General Motors Company in 1955. Sister unit NP 250 is in the background. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, road switcher

Northern Pacific diesel locomotive number 222 in the engine facility at Auburn, Washington. NP 222 is a GP-9 built by Electro Motive Division of General Motors Company in 1955. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, road switcher

Northern Pacific diesel locomotive number 230 in the engine facility at Auburn, Washington, on May 07, 1968. NP 230 is a GP-9 built by Electro Motive Division of General Motors Company in 1955. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, road switcher

Northern Pacific diesel locomotive number 230 in the engine facility at Auburn, Washington, on May 07, 1968. NP 230 is a GP-9 built by Electro Motive Division of General Motors Company in 1955. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, road switcher