Great Northern Number 578, a Type SD9, at Wenatchee, Washington, June 1969.

Great Northern Diesel Locomotive , Class SD45 in Wenatchee, Washington, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 732, Class GP9 in Wenatchee, Washington, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 732 at Wenatchee, Washington, June 8, 1968, Big Sky Blue paint scheme. Other subject classes: Locomotive

Great Northern Diesel Locomotive 731, Class GP9 in Wenatchee, Washington, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 724, Class GP9 in Wenatchee, Washington, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 720, Class GP9 in Wenatchee, Washington, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 720, Class GP9 in Wenatchee, Washington, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 717, Class GP9 in Wenatchee, Washington, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 715 at Wenatchee, Washington, July 1969, simplified orange/green paint scheme. Other subject classes: Locomotive

Great Northern Diesel Locomotive 714, Class GP9 in Wenatchee, Washington, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 693, Class GP9 in Wenatchee, Washington, undated. This photograph was taken before dynamic brakes were installed. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 692 at Wenatchee, Washington on undated. The photograph shows an Electro-Motive Division Type GP-9, Great Northern Class GP-9. The locomotive is painted in the simplified green and orange scheme. Other subject classes: Locomotive-Diesel

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

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.

Great Northern Diesel Locomotive 444A, Class F7 in Wenatchee, Washington, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 430 at Wenatchee, Washington on April 10, 1970. The photograph shows an Electro-Motive Division Type F-45, Great Northern Class F-45. The locomotive is painted in the Big Sky Blue scheme. A crew member is visible in the cab of the locomotive. Visible in the background is a Great Northern tank car. Other subject classes: Locomotive-Diesel, Car-Tank, People-Railroad Crew

Great Northern Diesel Locomotive 425 on September 6, 1969. The photograph shows an Electro-Motive Division Type SD-45, Great Northern Class SD-45. The locomotive is painted in the Big Sky Blue scheme. Visible in the background is a sand tower, small shed, a Great Northern box car and a FGEX car. Other subject classes: Locomotive-Diesel, Tower-Sand

Great Northern Diesel Locomotive 420, Class SD45 in Wenatchee, Washington, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 403, Class SD45 in Wenatchee, Washington, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 401, Class SD45 in Wenatchee, Washington, undated. Photograph by Wade Stevenson.