Great Northern Diesel Locomotive 321, Class SDP40 in Spokane, Washington, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 321, Class SDP40 in Spokane, Washington, undated. Photograph by Wade Stevenson.

Great Northern 3006, an Electro-Motive Division Type GP30 at Spokane, Washington, April 12, 1968.

Great Northern Diesel Locomotive 3004 at Spokane, Washington, May 1970, simplified orange/green paint scheme. Other subject classes: Locomotive

Great Northern Diesel Locomotive 278A at Spokane, Washington, June 6, 1967, simplified orange/green paint scheme. Other subject classes: Locomotive

Great Northern 2528, a General Electric Type U28B at at Spokane, Washington, April 12, 1968.

Great Northern 2509, 2517, and 2519 General Electric Type U25Bs and Great Northern 2325, a U28B at Spokane, Washington, April 12, 1968.

Great Northern Diesel Locomotive 227 at Spokane, Washington, undated, original orange/green paint scheme. Other subject classes: Locomotive

Great Northern Diesel Locomotive 203 at Spokane, Washington on undated. The photograph shows a freight train. The lead locomotive is an Electro-Motive Division Type SW-1500, Great Northern Class SW-15 painted in the Big Sky Blue scheme. Visible in the background is a Great Northern caboose and a truck trailer, on a flat car, which is painted in a scheme of the Great Northern colors of green and orange. Another freight train is visible on an adjacent track. Other subject classes: Locomotive-Diesel, Train-Freight, Caboose-Wood

Great Northern Diesel Locomotive 203 at Spokane, Washington on undated. The photograph shows a freight train. The lead locomotive is an Electro-Motive Division Type SW-1500, Great Northern Class SW-15 painted in the Big Sky Blue scheme. Visible in the background is a Great Northern caboose and a truck trailer, on a flat car, which is painted in a scheme of the Great Northern colors of green and orange. Another freight train is visible on an adjacent track. Other subject classes: Locomotive-Diesel, Train-Freight, Caboose-Wood