Northern Pacific diesel locomotive number 3600 in the engine facility at Auburn, Washington, on July 24, 1970. NP 3600 is a SD-45 built by Electro Motive Division of General Motors Company in 1967. The unit is coupled to sister NP 3604. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight locomotive

Northern Pacific Number 349, an Electro-Motive Division (EMD) GP9, at Cle Elum, Washington, June 1967.

Northern Pacific Number 345, an Electro-Motive Division (EMD) GP9, August 1967.

Northern Pacific diesel locomotive number 338 at the engine facility in Tacoma, Washington, on June 1970. NP 338 is a GP-9 built by Electro Motive Division of General Motors Company in 1956. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, road switcher

Northern Pacific diesel locomotive number 336 in the Tacoma, Washington, roundhouse. NP 336 is a GP-9 built by Electro Motive Division of General Motors Company in 1956. Photo by Herman Hunt, J.M. Fredrickson collection. Other Subject Classes: diesel locomotive, road switcher

Northern Pacific diesel locomotive number 335 at the engine facility in Tacoma, Washington, on April 1970. NP 335 is a GP-9 built by Electro Motive Division of General Motors Company in 1956. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, road switcher

Northern Pacific diesel locomotive number 334 at the engine facility in Tacoma, Washington, on July 20, 1970. NP 334 is a GP-9 built by Electro Motive Division of General Motors Company in 1956. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, road switcher

Northern Pacific diesel locomotive number 333 in a yard circa 1970. NP 333 is a GP-9 built by Electro Motive Division of General Motors Company in 1956. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, road switcher

Northern Pacific diesel locomotive number 332 in the engine facility at Auburn, Washington, on April 20, 1970. NP 332 is a GP-9 built by Electro Motive Division of General Motors Company in 1956. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, road switcher

Northern Pacific diesel locomotive number 331 in the engine facility at Auburn, Washington, on July 1970. NP 331 is a GP-9 built by Electro Motive Division of General Motors Company in 1956. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, road switcher