Northern Pacific diesel locomotive number 3601 in the engine facility at Auburn, Washington, on February 1967. NP 3601 is a SD-45 built by Electro Motive Division of General Motors Company in 1966. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight locomotive

Northern Pacific diesel locomotive number 3601 in the engine facility at Auburn, Washington, on February 1967. NP 3601 is a SD-45 built by Electro Motive Division of General Motors Company in 1966. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight locomotive

Northern Pacific diesel locomotive number 3601 in the engine facility at Auburn, Washington, on March 21, 1967. NP 3601 is a SD-45 built by Electro Motive Division of General Motors Company in 1966. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight locomotive

Northern Pacific diesel locomotive number 3601 in the engine facility at Auburn, Washington, on February 1967. NP 3601 is a SD-45 built by Electro Motive Division of General Motors Company in 1966. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight locomotive

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 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 332 at the roundhouse in Tacoma, Washington, on February 1967. 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 330 in the engine facility at Auburn, Washington, on May 01, 1970. NP 330 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 3304 in the engine facility at Auburn, Washington, on February 09, 1970. NP 3304 is a U33C built by General Electric in 1969. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight locomotive

Northern Pacific diesel locomotive number 3304 in the engine facility at Auburn, Washington, on October 01, 1969. NP 3304 is a U33C built by General Electric in 1969. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight locomotive