Great Northern wheel car X4401 at Hillyard, Washington, undated. Photograph by Wade Stevenson.

Great Northern spreader X1710 in Wenatchee, Washington, undated. Photograph by Wade Stevenson.

Great Northern spreader X1701 in Washington State, undated. Photograph by Wade Stevenson.

Great Northern Snow Dozer X1671 in Washington State, undated. Photograph by Wade Stevenson.

Great Northern Snow Dozer X1666 in Hillyard, Washington, undated. Photograph by Wade Stevenson.

Great Northern Snow Dozer X1641 in Wenatchee, Washington, undated. Photograph by Wade Stevenson.

Great Northern Snow Dozer X1641 in Wenatchee, Washington, undated. Photograph by Wade Stevenson.

Great Northern scale test car X846 in Washington State, undated. Photograph by Wade Stevenson.

Great Northern scale car 06025 and scale test car X846 in Washington State, undated. Photograph by Wade Stevenson.

Great Northern sand car X2956 in Washington State, undated. Photograph by Wade Stevenson.