Great Northern Diesel Locomotive 556 at Superior, Wisconsin on July 29, 1969. The photograph shows a freight train with an Electro-Motive Division Type SD-7, Great Northern Class SD-7. The locomotive is 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, Car-Tank

Great Northern Diesel Locomotive 560 at Superior, Wisconsin on July 29, 1969. The photograph shows an Electro-Motive Division Type SD-7, Great Northern Class SD-7. The locomotive is painted in the simplified green and orange scheme. Visible in the background are the remnants of a water tank. Other subject classes: Locomotive-Diesel, Tank-Water

Great Northern 562, an Electro-Motive Division Type SD7 at Superior, Wisconsin, August 15, 1961.

Great Northern 562, an Electro-Motive Division Type SD7 at Superior, Wisconsin, August 15, 1961.

Great Northern Diesel Locomotive 564 at Superior, Wisconsin, May 2, 1970, simplified orange/green paint scheme. Other subject classes: Locomotive

Great Northern Diesel Locomotive 569 at Superior, Wisconsin on July 29, 1969. The photograph shows an Electro-Motive Division Type SD-7, Great Northern Class SD-7. The locomotive is painted in the Big Sky Blue scheme. Other subject classes: Locomotive-Diesel

Great Northern Diesel Locomotive 569 ahead of 464A at Superior, Wisconsin on July 29, 1969. The photograph shows an Electro-Motive Division Type SD-7, Great Northern Class SD-7. The locomotive is painted in the Big Sky Blue scheme. A crew member is visible in the cab of the locomotive. Other subject classes: Locomotive-Diesel, People-Railroad Crew

Great Northern Diesel Locomotive 569 at Superior, Wisconsin on July 29, 1969. The photograph shows a freight train with two locomotives 569 and 464. The lead locomotive is an Electro-Motive Division Type SD-7, Great Northern Class SD-7 painted in the Big Sky Blue scheme. A crew member is visible in the cab of the locomotive. Other subject classes: Locomotive-Diesel, Train-Freight, People-Railroad Crew

Great Northern Diesel Locomotive 572 at Superior, Wisconsin, June 27, 1962, original orange/green paint scheme. Other subject classes: Locomotive

Great Northern Diesel Locomotive 574 at Superior, Wisconsin on July 30, 1969. The photograph shows an Electro-Motive Division Type SD-9, Great Northern Class SD-9. The locomotive is painted in the simplified green and orange scheme. Other subject classes: Locomotive-Diesel