Great Northern Steam Locomotive 3399, a Class O-8, a 2-8-2, built by Great Northern in 1932, 29"x32" cylinders, 69" drivers, 250 psi steam pressure, 367,000 pounds weight, 78,000 pounds tractive effort. The Great Northern built Numbers 3397-3398-3399 in Hillyard, Washington. They were the only steam locomotives built for an American railroad that year. This class was the heaviest Mikado type built, later 25 of the Class O-7 were rebuilt to Class O-8. Taken at Hillyard, Washington. A David Emerson photo taken in 1935.

Great Northern Steam Locomotive 3398, a Class O-8, a 2-8-2, built in Hillyard Shops in 1932, second of only three locomotives built for an American railroad in 1932, Hillyard, Washington. A David Emerson photo taken in 1935.

Great Northern Steam Locomotive Number 3397 at Hillyard, Washington, 1932.

Great Northern Steam Locomotive 3397, a Class O-8, a 2-8-2, built in Hillyard Shops in 1932, one of only three locomotives built for an American railroad in that year, Hillyard, Washington. A David Emerson photo taken in 1935.

Great Northern Steam Locomotive Number 3396 at Hillyard, Washington, 1935.

Great Northern Steam Locomotive Number 3391 at Hillyard, Washington, 1932.

Great Northern Steam Locomotive 3378, Class O7 in Hillyard, Washington, undated. Photograph by Wade Stevenson.

Great Northern Steam Locomotive 3378, Class O7 in Hillyard, Washington, undated. Photograph by Wade Stevenson.

Great Northern Steam Locomotive 3376, Class O7 in Hillyard, Washington, undated. Photograph by Wade Stevenson.

Great Northern Steam Locomotive Number 3371 at Hillyard, Washington, 1935.