Great Northern Steam Locomotive 2550, a Class S-1, a 2-8-2, built by Baldwin Locomotive Works in 1929, 28"x30" cylinders, 73" drivers, 250 psi steam pressure, 4720,100 pounds weight, 68,500 pounds tractive effort. This class did not work out as passenger engines so they were used on freight from Spokane, Washington to Whitefish, Montana. Taken at Hillyard, Washington by David Emerson in 1935.

Great Northern Steam Locomotive Number 2550 at Hillyard, Washington, 1935.

Great Northern Steam Locomotive 2550, Class S1 in Hillyard, Washington, undated. Photograph by Wade Stevenson.

Great Northern Steam Locomotive Number 2551 at Hillyard, Washington, 1935.

Great Northern Steam Locomotive 2551, Class S1 in Hillyard, Washington, undated. Photograph by Wade Stevenson.

Great Northern Steam Locomotive Number 2552 at Hillyard, Washington, 1935.

Great Northern Steam Locomotive Number 2552 at Hillyard, Washington, 1935.

Great Northern Steam Locomotive 2552, a 4-8-4, used to pull freight to Whitefish, Montana, Hillyard, Washington. A David Emerson photo taken in 1934 or 1935.

Great Northern Steam Locomotive 2553, a 2-8-4, used to pull freight to Whitefish, Montana, and Hillyard, Washington. A David Emerson photo taken in 1935.

Great Northern Steam Locomotive Number 2553 with water tank in background, Class S-1, at Hillyard, Washington, 1935.