Great Northern Diesel Locomotive 2009, Class GP20 in Washington State, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 2009, Class GP20 in Washington State, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 2009, Class GP20 and a Class U25B in Washington State, undated. Photograph by Wade Stevenson.

Great Northern 2009 and 2015 (part of the Burlington Northern since March 1, 1970), Electro-Motive Division Type GP20's at Algoma, Idaho, March 28, 1970.

Great Northern 2009 and 2015 (part of the Burlington Northern since March 1, 1970), Electro-Motive Division Type GP20's at Algoma, Idaho, March 28, 1970.

Great Northern Diesel Locomotive 201 at Spokane, Washington on November 12, 1967. The photograph also shows locomotive number 203. Both locomotives are Electro-Motive Division Type SW-1500, Great Northern Class SW-15 painted in the Big Sky Blue scheme. Visible in the background is a portion of a Great Northern boxcar. Other subject classes: Locomotive-Diesel, Train-Freight

Great Northern Diesel Locomotive 201 at Spokane, Washington on undated. The photograph also shows locomotive number 203. Both locomotives are Electro-Motive Division Type SW-1500, Great Northern Class SW-15 painted in the Big Sky Blue scheme. Visible in the background is a transfer table and diesel servicing brick buildings. Photograph by Robert Johnson. Other subject classes: Locomotive-Diesel, House-Diesel

Great Northern Diesel Locomotive 201, Class RS2 in Washington State, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 201, Class RS2 in Washington State, undated. Photograph by Wade Stevenson.

Great Northern diesel locomotive 201, an American Locomotive Company Type RS2 at Bellingham, Washington. On the engineer's side photograph taken in or near the Great Northern yard. Other subject categories: Locomotive-Diesel, Train-Freight

Great Northern diesel locomotive 201, an American Locomotive Company Type RS2 at Bellingham, Washington. On the engineer's side, photograph taken in or near the Great Northern yard. Other subject categories: Locomotive-Diesel, Train-Freight

Great Northern Diesel Locomotive 2010, June 1, 1967. The photograph shows an Electro-Motive Division Type GP-20, Great Northern Class GP-20. The locomotive is painted in the original green and orange scheme. Railroad crew is visible on top of the locomotive. Visible in background is a sand tower.. Other subject classes: Locomotive-Diesel, People-Railroad Crew, Tower-Sand

Great Northern Diesel Locomotive 2012 at Minneapolis, Minnesota, 1968, Big Sky Blue paint scheme. Other subject classes: Locomotive

Great Northern Diesel Locomotive 2012, undated. The photograph shows an Electro-Motive Division Type GP-20, Great Northern Class GP-20. The locomotive is painted in the Big Sky Blue scheme. Other subject classes: Locomotive-Diesel

Great Northern Diesel Locomotive 2014, July 1, 1969. The photograph shows freight train with two locomotives. The lead locomotive is an Electro-Motive Division Type GP-20, Great Northern Class GP-20 painted in the Big Sky Blue scheme. Visible in the background is a depot and grade crossing signals. Visible in the foreground is a small switch stand. Other subject classes: Locomotive-Diesel, Train-Freight, Depot-Passenger

Great Northern Diesel Locomotive 2015, Class GP20 in Washington State, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 2015, Class GP20 in Washington State, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 2019, Class GP20 in Washington State, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 2020 at Chicago, Illinois on May 30, 1970. The photograph shows an Electro-Motive Division Type GP-20, Great Northern Class GP-20. The locomotive is painted in the original green and orange scheme. A crew member is visible at the rear of the locomotive. Other subject classes: Locomotive-Diesel, People-Railroad Crew

Great Northern Diesel Locomotive 2023, Class GP20 in Washington State, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 2023, Class GP20 in Washington State, undated. Photograph by Wade Stevenson.

Great Northern Diesel Locomotive 203 at Spokane, Washington on July 1, 1968. The photograph shows an Electro-Motive Division Type SW-1500, Great Northern Class SW-15. The locomotive is painted in the Big Sky Blue scheme. Other subject classes: Locomotive-Diesel

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

Great Northern Diesel Locomotive 2031 on August 1, 1968. The photograph also shows locomotive number 2007. The lead locomotive is an Electro-Motive Division Type GP-20, Great Northern Class GP-20 painted in the Big Sky Blue scheme. Visible in the background are portions of a large brick building. Other subject classes: Locomotive-Diesel

Great Northern Diesel Locomotive 206 at Minneapolis, Minnesota, 1968, Big Sky Blue paint scheme. Other subject classes: Locomotive

Great Northern Diesel Locomotive 207 at Minneapolis, Minnesota on August 14, 1968. The photograph shows an Electro-Motive Division Type SW-1500, Great Northern Class SW-15. The locomotive is painted in the Big Sky Blue scheme. Other subject classes: Locomotive-Diesel

Great Northern Diesel Locomotive 207, undated. The photograph shows an Alco Type RS-2, Great Northern Class RS-4. The locomotive is painted in the original green and orange scheme. Visible in the background is a portion of a Great Northern caboose and a Great Northern stock car. Visible in the foreground is a switch stand with colored lenses. Other subject classes: Locomotive-Diesel

Great Northern diesel locomotive 208, an American Locomotive Company Type RS3, at Bellingham, Washington. leading northbound freight train with Great Northern RS3 220 and Great Northern RS3 230; at depot; photograph sequence TRWahl0775-774. Other subject categories: Locomotive-Diesel

Great Northern Diesel Locomotive 209 on June 1, 1968. The photograph shows two locomotives. The lead locomotive is an Electro-Motive Division Type SW-1500, Great Northern Class SW-15 painted in the Big Sky Blue scheme. Other subject classes: Locomotive-Diesel