Great Northern Steam Locomotive Number 400, Class D-4, at wreck site, undated.

Great Northern Steam Locomotive Number 400, Class D-4, undated.

Great Northern Steam Locomotive 4000, Class Z6 in Hillyard, Washington, undated. Photograph by Wade Stevenson.

Great Northern Steam Locomotive 4000, Class Z6 in Hillyard, Washington, undated. Photograph by Wade Stevenson.

Great Northern Steam Locomotive 4000, a Class Z-6, a 4-6-6-4, purchased from Spokane, Portland, & Seattle Railway (SP&S) in January 1940 as SP&S Number 903, sold back to Spokane, Portland & Seattle Railway on March 17, 1950 as SP&S 903, at an unknown location. From the David Emerson Collection, added from the Eugene Hawk Collection, a Maynard Rikerd photo, undated.

Great Northern steam locomotive 4000.

Great Northern Steam Locomotive Number 4001 with freight train, Class Z-6, at Spokane, Washington, 1945.

Great Northern Steam Locomotive Number 4001 locomotive, Class Z-6, at Spokane, Washington, undated.