Great Northern diesel locomotive 5101, an Electro-Motive Corporation (EMC) NC switcher in 1938.

Great Northern diesel locomotive 5105, an Electro-Motive Division (EMD) SW1 switcher, at Minneapolis, Minnesota in 1942.

Great Northern Diesel Locomotive 511 leading a Passenger Train at Interbay, Washington in 1947. Diesel Locomotive 511 with a passenger train along the waterfront. Photographer Hal Will. Other subject classes: Dsl Loco / Pass Trn

Great Northern Diesel Locomotive 511 with Steam Locomotives at Interbay, Washington Roundhouse in 1947. Diesel Locomotive 511, , a Class E-7, between two steam locomotive tenders in the Interbay roundhouse. Photographer Hal Will. Other subject classes: Dsl Loco / Stm Loco

Great Northern diesel locomotive 511 an Electro-Motive Division Type E7A, at Bellingham, Washington leading passenger train southbound past Pacific Coast Paper Mills; taken from Chestnut Street bridge; photograph sequence TRWahl0303-0304. Other subject categories: Locomotive-Diesel

Great Northern diesel locomotive 511 an Electro-Motive Division Type E7A, at Bellingham, Washington leading northbound passenger train; Mount Baker Plywood in background. Other subject categories: Locomotive-Diesel, Train-Passenger

Great Northern diesel locomotive 511 at Bellingham, Washington looking up at bridge 59 north of Squalicum Creek with passenger train heading south; view looking north from west (water) side. Other subject categories: Locomotive-Diesel, Train-Passenger, E7A, bridge-Plate Girder

Great Northern diesel locomotive 511 an Electro-Motive Division Type E7A, at South Bellingham, Washington leading southbound passenger train onto trestle. Other subject categories: Locomotive-Diesel, Train-Passenger

Great Northern Diesel Locomotive 512 at Duluth, Minnesota on July 27, 1967. 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 512 at Duluth, Minnesota on July 27, 1967. The photograph shows an Electro-Motive Division Type EA-7, Great Northern Class E-7. The locomotive is painted in the simplified green and orange scheme. Photograph by Owen Leander. Other subject classes: Locomotive-Diesel