Great Northern Diesel Locomotive 506 at Saint Paul, Minnesota on July 29, 1963. The photograph shows passenger train with an Electro-Motive Division Type E-7, Great Northern Class E-7 locomotive. The locomotive is painted in the simplified green and orange scheme. Other subject classes: Locomotive-Diesel

Great Northern Diesel Locomotive 506 at Saint Paul, Minnesota on August 13, 1968. The photograph shows an Electro-Motive Division Type E-7, Great Northern Class E-7. The locomotive is painted in the simplified green and orange scheme. Photograph by Karl Henkels. Other subject classes: Locomotive-Diesel

Great Northern Diesel Locomotive 506 at Saint Paul, Minnesota, 1968, an Electro-Motive Division type E-7 in the simplified orange/green paint scheme . Other subject classes: Locomotive

Great Northern Diesel Locomotive 507 at Saint Paul, Minnesota, 1954, diesel locomotive number 507, an Electro-Motive Division type E-7. Other subject classes: Passenger train

Great Northern Diesel Locomotive 509 at Saint Paul, Minnesota on May 30, 1968. The photograph shows an Electro-Motive Division Type E-7, Great Northern Class E-7. The locomotive is painted in the simplified green and orange scheme. Other subject classes: Locomotive-Diesel

Great Northern Diesel Locomotive 510 at Saint Paul, Minnesota on July 24, 1967. The photograph shows an Electro-Motive Division Type EA-7, Great Northern Class E-7. The locomotive is painted in the original green and orange scheme. A crew member is visible leaning out of the window of the locomotive?s cab. Other subject classes: Locomotive-Diesel, People-Railroad Crew

Great Northern Diesel Locomotive 554 at Saint Paul, Minnesota on July 24, 1967. 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. 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 600 at Saint Paul, Minnesota, June 5, 1971, original orange/green paint scheme (as Burlington Northern 1500). Other subject classes: Locomotive

Great Northern Diesel Locomotive 679 at Saint Paul, Minnesota, 1968, Big Sky Blue paint scheme. Other subject classes: Locomotive

Great Northern Number 151, a Type NW2, at Saint Paul, Minnesota, June 1967.