Great Northern Rail Train Cars at Wenatchee, Washington, undated. Photograph by Wade Stevenson.

Great Northern rotary snowplow X1503 in Washington State, undated. Photograph by Wade Stevenson.

Great Northern rotary snowplow X1503 in Washington State, undated. Photograph by Wade Stevenson.

Great Northern rotary snowplow X1507, undated. Photograph by Wade Stevenson.

Great Northern rotary snowplow X1507, undated. Photograph by Wade Stevenson.

Great Northern rotary snowplow X1507, undated. Photograph by Wade Stevenson.

Great Northern rotary snowplow X1507, undated. Photograph by Wade Stevenson.

Great Northern rotary snowplow X1507, undated. Photograph by Wade Stevenson.

Great Northern Rotary Snowplow X1510 in Washington State, undated. Photograph by Wade Stevenson.

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