Great Northern Diesel Locomotive 503 leading a Passenger Train at Interbay, Washington in 1947. Note the powerhouse smokestack, water tower, steam locomotive oil tower, and sanding tower in background from left-to-right . Diesel Locomotive 503, a Class E-7, takes out the Empire Builder at Interbay past steam engine 3216, a Class O-4. Notes by photographer Hal Will: 'The new diesel Empire Builder - this new train, headed north and east to Chicago, showed corporate pride in passenger rolling stock. The design and consistently matching paint job advertis ed a quality train. The freight steamer at right was waiting to follow the 'Builder' out. Crewman said these diesel engines were the first where a cup of coffee could rest on a shelf without spilling while the train was moving. Even the newest steam engines were soon called rib bruisers or other unpleasant names describing a rough ride. [HW] ' Other subject classes: Dsl Loco / Pass Trn