Northern Pacific diesel locomotive number 2528 in the engine facility at Auburn, Washington, on March 21, 1967. NP 2528 is a U25C built by General Electric in 1965. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight locomotive

Northern Pacific diesel locomotive number 2527 in the engine facility at Auburn, Washington, on October 1969. NP 2527 is a U25C built by General Electric in 1965. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight locomotive

Northern Pacific diesel locomotive number 2524 in the engine facility at Auburn, Washington, on July 24, 1967. NP 2524 is a U25C built by General Electric in 1965. The unit is coupled to sister NP 2507. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight locomotive

Northern Pacific diesel locomotive number 2523 control stand at Auburn, Washington, in May 1968. NP 2523 is a U25C built by General Electric in 1965. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight locomotive

Northern Pacific diesel locomotive number 2523 control stand at Auburn, Washington, in May 1968. NP 2523 is a U25C built by General Electric in 1965. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight locomotive

Northern Pacific diesel locomotive number 2523 in the engine facility at Auburn, Washington, on September 04, 1967. NP 2523 is a U25C built by General Electric in 1965. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight locomotive

Northern Pacific diesel locomotive number 2521 in the engine facility at Auburn, Washington, on April 08, 1968. NP 2521 is a U25C built by General Electric in 1965. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight locomotive

Northern Pacific diesel locomotive number 2522 in the engine facility at Auburn, Washington, on April 08, 1968. NP 2522 is a U25C built by General Electric in 1965. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight locomotive

Northern Pacific diesel locomotive number 2521 in the engine facility at Auburn, Washington, on October 09, 1967. NP 2521 is a U25C built by General Electric in 1965. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight locomotive

Northern Pacific diesel locomotive number 2520 in the engine facility at Auburn, Washington, on May 07, 1968. NP 2520 is a U25C built by General Electric in 1965, parked near the Auburn roundhouse in 1968. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight locomotive