Spokane, Portland, and Seattle Railway Steam Locomotive at Hillyard, Washington, undated. Photograph by Wade Stevenson.

Spokane, Portland, and Seattle Railway Steam Locomotive 911, Class Z8 in Hillyard, Washington, undated. Photograph by Wade Stevenson.

Spokane, Portland, and Seattle Railway Steam Locomotive 910, Class Z8 in Hillyard, Washington, undated. Photograph by Wade Stevenson.

Spokane, Portland, and Seattle Railway Steam Locomotive 910, Class Z8 in Hillyard, Washington, undated. Photograph by Wade Stevenson.

Spokane, Portland, and Seattle Railway Steam Locomotive 910, Class Z8 in Hillyard, Washington, undated. Photograph by Wade Stevenson.

Spokane, Portland, and Seattle Railway Steam Locomotive 910, Class Z8 in Hillyard, Washington, undated. Photograph by Wade Stevenson.

Spokane, Portland, and Seattle Railway Steam Locomotive 910, Class Z8 in Hillyard, Washington, undated. Photograph by Wade Stevenson.

Spokane, Portland, and Seattle Railway Steam Locomotive 910, Class Z8 and Great Northern Diesel Locomotive 440, Class FA at Hillyard, Washington, undated. Photograph by Wade Stevenson.

Spokane, Portland, and Seattle Railway Steam Locomotive 905, Class Z6 in Hillyard, Washington, undated. Photograph by Wade Stevenson.

Spokane, Portland, and Seattle Railway Steam Locomotive 905, Class Z6 in Hillyard, Washington, undated. Photograph by Wade Stevenson.