Great Northern Diesel Locomotive 317B at Superior, Wisconsin on July 30, 1969. The photograph shows an Electro-Motive Division Type F-7, Great Northern Class F-3-7-B. The locomotive is painted in the Big Sky Blue scheme. Photograph by Owen Leander. Other subject classes: Locomotive-Diesel

Great Northern Diesel Locomotive 316C at Superior, Wisconsin on July 26, 1969. The photograph shows an Electro-Motive Division Type F-7, Great Northern Class F-3-7-A. The locomotive is painted in the simplified green and orange scheme. A crew member is visible standing in the door of the locomotive?s cab. Visible in the foreground is a switch stand with colored lenses/markers. Photograph by Owen Leander. Other subject classes: Locomotive-Diesel, People-Railroad Crew, Switch Stand

Great Northern Diesel Locomotive 316C at Superior, Wisconsin on June 29, 1969. The photograph shows a freight train with two locomotives. Trailing locomotive is an Electro-Motive Division Type F-7,Great Northern Class F-3-7-A painted in the simplified green and orange scheme. Visible in the background is a semaphore. The lead locomotive is painted in the Big Sky Blue scheme. Photograph by Owen Leander. Other subject classes: Locomotive-Diesel

Great Northern Diesel Locomotive 316C at Superior, Wisconsin on July 29, 1969. The photograph also shows locomotive number 569. 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 standing next to the locomotive. Visible are several switch stands with colored lenses/markers. Photograph by Owen Leander. Other subject classes: Locomotive-Diesel, People-Railroad Crew, Switch Stand

Great Northern Diesel Locomotive 314C at Superior, Wisconsin on July 30, 1969. The photograph shows an Electro-Motive Division Type F-7, Great Northern Class F-3-7-A. The locomotive is painted in the Big Sky Blue scheme. Photograph by Owen Leander. Other subject classes: Locomotive-Diesel

Great Northern Diesel Locomotive 314C at Superior, Wisconsin on July 30, 1969. The photograph also shows locomotive number 317B. The lead locomotive is an Electro-Motive Division Type F-7, Great Northern Class F-3-7-A painted in the Big Sky Blue scheme. Photograph by Owen Leander. Other subject classes: Locomotive-Diesel

Great Northern Diesel Locomotive 314A at Superior, Wisconsin on August 11, 1965. The photograph shows an Electro-Motive Division Type F-7, Great Northern Class F-3-7-A. The locomotive is painted in the simplified green and orange scheme. Visible in the background is a large brick building. Photograph by Karl Henkels. Other subject classes: Locomotive-Diesel

Great Northern Diesel Locomotive 313C at Allouez, Wisconsin, undated, ore train. Other subject classes: Freight train

Great Northern Diesel Locomotive 311A at Superior, Wisconsin on June 22, 1969. The photograph also shows locomotive number 569. The lead locomotive is an Electro-Motive Division Type F-7, Great Northern Class F-3-7-A painted in the Big Sky Blue scheme. Visible in the background is a portion of Great Northern locomotive 569. Other subject classes: Locomotive-Diesel

Great Northern Diesel Locomotive 309A at Superior, Wisconsin on July 8, 1966. The photograph shows an Electro-Motive Division Type F-7, Great Northern Class F-3-7-A. The locomotive is painted in the original green and orange scheme. Photograph by Karl Henkels. Other subject classes: Locomotive-Diesel