Great Northern Steam Locomotive Number 709 at Interbay, Washington, 1924.

Great Northern Steam Locomotive Number 8 at Seattle, Washington, 1947.

Great Northern Steam Locomotive Number 871 at Seattle, Washington, 1938.

Great Northern Steam Locomotive Number 872 at Seattle, Washington, 1945.

Great Northern Steam Locomotive 881, Class C3 in Seattle, Washington, undated. Photograph by Wade Stevenson.

Great Northern Steam Locomotive Number 883 at Seattle, Washington, 1949.

Great Northern Steam Locomotive Number 896 at Interbay, Washington, circa 1930'S.

Great Northern Steam Locomotive Number 896 at Seattle, Washington, 1951.

Great Northern Steam Locomotive at Interbay, Washington in 1947. A Great Northern 2-8-8-2 articulated locomotive (mallet) gets its forward valve gear steam cleaned. The cylinder behind the workman's right elbow is the leading part of an identical set of drive wheels and massive linkage that doubles the traction power of the mallet design and still negotiates curves. The forward set of drive gear is designed to move slightly from side to side to negotiate curves. Steam Locomotive, steam-cleaning valve gear. Photographer Hal Will. Other subject classes: Stm Loco

Great Northern Steam Locomotive at Interbay, Washington in 1947. Steam Locomotive with Hank Henderson in cab. Notes by photographer Hal Will: 'Yard engineer Hank Henderson moves a mallet onto the turntable at the Interbay roundhouse. [HW]'. Other subject classes: Stm Loco