Great Northern Diesel Locomotive 649, Class GP7 in Skykomish, Washington, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 649, Class GP7 in Skykomish, Washington, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 602, Class GP7 heading the "Cascadian" in Skykomish, Washington, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 602, Class GP7 in Skykomish, Washington, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 602, Class GP7 in Skykomish, Washington, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 466A at Skykomish, Washington, June 7, 1968, diesel locomotive number 466A, westbound. Other subject classes: Freight train

Great Northern Diesel Locomotive 458D at Skykomish, Washington, June 7, 1968, diesel locomotive number 458D, helper set. Other subject classes: Locomotive

Great Northern diesel locomotive 456A at Skykomish, Washington. Great Northern 456A parked in the yard at Skykomish near a boxcar. Other subject categories: Locomotive-Diesel, Yard-Freight

Great Northern Diesel Locomotive 402A, Class FT in Skykomish, Washington, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 251A at Skykomish, Washington, undated, diesel locomotive 251A, leading Train 6 (the "Cascadian"). Other subject classes: Passenger train