Great Northern Steam Locomotive Number 4175 at Hillyard, Washington, 1937.

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 386, Class A9 in Hillyard, Washington, undated. Photograph by Wade Stevenson.

Great Northern Steam Locomotive Number 383 at Hillyard, Washington, 1935.

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.

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

Great Northern Steam Locomotive 3356, a Class O-6, a 2-8-2, rebuilt by Great Northern in 1926 from Mallet Number 1921, 28"x32" cylinders, 63" drivers, 200 psi steam pressure, 320,100 pounds weight, 67,700 pounds tractive effort, last of Class O-6, Hillyard, Washington. A David Emerson photo taken in 1934 or 1935.

Great Northern Steam Locomotive Number 3369 waiting for repairs, Class O-6, at Hillyard, Washington, 1935.

Great Northern Steam Locomotive 3369, a Class O-6, a 2-8-2, rebuilt by Great Northern in 1925-1926 from Mallet Number 1905, 28"x32" cylinders, 63" drivers, 200 psi steam pressure, 320,100 pounds weight, 67,700 pounds tractive effort, Hillyard, Washington. From the David Emerson Collection, a Maynard Rikerd photo, undated.

Great Northern Steam Locomotive 3368, Class O6 in Hillyard, Washington, undated. Photograph by Wade Stevenson.

Great Northern Steam Locomotive 3368, Class O6 in Hillyard, Washington, undated. Photograph by Wade Stevenson.

Great Northern Steam Locomotive 3366, Class O6 in Hillyard, Washington, undated. Photograph by Wade Stevenson.

Great Northern Steam Locomotive 3366, Class O6 in Hillyard, Washington, undated. Photograph by Wade Stevenson.

Great Northern Steam Locomotive Number 3356 at Hillyard, Washington, 1935.

Great Northern Steam Locomotive 3356, a Class O-6, a 2-8-2, rebuilt by Great Northern in 1925-1926 from Mallet Number 1921, 28"x32" cylinders, 63" drivers, 200 psi steam pressure, 320,100 pounds weight, 67,700 pounds tractive effort, Hillyard, Washington. A David Emerson photo taken in 1934-1935.

Great Northern Steam Locomotive Number 3352 at Hillyard, Washington, 1935.

Great Northern Steam Locomotive 3352, a Class O-6, a 2-8-2, rebuilt by Great Northern Delta Shops in Everett, Washington in August 29, 1925 from W-1 Number 1919, Hillyard, Washington. A David Emerson photo taken in 1934 or 1935.

Great Northern Steam Locomotive Number 3351 at Hillyard, Washington, 1935.

Great Northern Steam Locomotive 3350, a Class O-6, a 2-8-2, rebuilt by Great Northern Shops in 1925-1926 from Number 1910 Mallet, 28"x32" cylinders, 63" drivers, 200 psi steam pressure, 320,100 pounds weight, 67,700 pounds tractive effort, Hillyard, Washington. A David Emerson photo taken in 1935.

Great Northern Steam Locomotive Number 3350 at Hillyard, Washington, 1935.