Northern Pacific GP9 and an FB Unit diesel leads scheduled freight number 931 through Black River, Washington, on February 11, 1970. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train.

Northern Pacific GP9 and a FB Unit diesel leads scheduled freight number 931 through Renton, Washington, on February 11, 1970. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train.

Northern Pacific GP9 and a FB Unit diesel leads scheduled freight number 931 through the streets of Renton, Washington, on February 11, 1970. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train.

Northern Pacific 239, a GP9 diesel, leads the Fort Lewis Local eastbound (railroad) between McCarver Street and Ruston in Tacoma, Washington, in May 1968. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train.

Northern Pacific GP9 and a FB Unit diesel leads scheduled freight number 931 across the high trestle at Wilburton, Washington, just south of Bellevue, on February 11, 1970. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train, trestle bridge.

Two GP9s, Northern Pacific 246 and 231 help a rerouted extra freight train across Pacific Avenue in Tacoma, Washington, and up the South Tacoma hill to get around a problem on the Point Defiance line, on January 22, 1967. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train, helper locomotive.

Two GP9s, Northern Pacific 246 and 231 help a rerouted extra freight train across Pacific Avenue in Tacoma, Washington, on January 22, 1967. The train is using the South Tacoma hill to get around a problem on the Point Defiance line. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train, helper locomotive.

Northern Pacific 250, a GP9, leads the eastbound Mobase Local over drawbridge 39 on the way to the South Tacoma hill on the 4th subdivision Prairie Line in Tacoma, Washington, on February 10, 1970. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train, trestle bridge.

Northern Pacific 250, a GP9, leads the eastbound Mobase Local on the approach to drawbridge 39 on the way to the South Tacoma hill on the 4th subdivision Prairie Line in Tacoma, Washington, on February 10, 1970. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train, trestle bridge.

Northern Pacific 250, a GP9, leads the eastbound Mobase Local on the bridge over the mainline at 15th Street on the way to the South Tacoma hill on the 4th subdivision Prairie Line in Tacoma, Washington, on February 10, 1970. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train, trestle bridge.