Great Northern Diesel Locomotive 688 at Wenatchee, Washington, June 8, 1968, Big Sky Blue paint scheme. Other subject classes: Locomotive

Great Northern Diesel Locomotive 668, Class GP9 in Wenatchee, Washington, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 668, Class GP9 in Wenatchee, Washington, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 663, Class GP9 in Wenatchee, Washington, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 659, Class in Wenatchee, Washington, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 470D at Wenatchee, Washington on undated. The photograph shows a freight train with 5 locomotives, also including 470C. The lead locomotive is an Electro-Motive Division Type F-7, Great Northern Class F-3-7-A painted in the simplified green and orange scheme. A crew member is visible in the cab of the locomotive. Other subject classes: Locomotive-Diesel, Train-Freight, Mountains

Great Northern Diesel Locomotive 470A, Class F7 in Wenatchee, Washington, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 468A, Class F7 in Wenatchee, Washington, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 446D, Class F7 in Wenatchee, Washington, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 446A, Class F7 in Wenatchee, Washington, undated. Photograph by Wade Stevenson.