Great Northern electric locomotives 5008B and 5008A, Class Z1 in Skykomish, Washington, undated. Photograph by Wade Stevenson.

Great Northern electric locomotives 5008B and 5008A, Class Z1 in Skykomish, Washington, undated. Photograph by Wade Stevenson.

Great Northern electric locomotives 5012 and 5013, Class Y1 in Skykomish, Washington, undated. Photograph by Wade Stevenson.

Great Northern electric locomotives 5015 and 5012, Class Y1 in Skykomish, Washington, undated. Photograph by Wade Stevenson.

Great Northern electric locomotives 5025 and 5026, in Skykomish, Washington, 1952. General Electric built two demonstrators to show the Great Northern Railway in 1952. They were sold to the Pennsylvania Railway in March 1953 and numbered 4943 and 4944. Photograph by Wade Stevenson.

Great Northern electric locomotives 5025 and 5026, in Skykomish, Washington, 1952. General Electric built two demonstrators to show the Great Northern Railway in 1952. They were sold to the Pennsylvania Railway in March 1953 and numbered 4943 and 4944. Photograph by Wade Stevenson.

Great Northern electric locomotives 5025 and 5026, General Electric demonstration locomotives later returned to General Electric and sold to the Pennsylvania Railroad in Skykomish, Washington, 1952. Photograph by Wade Stevenson.

Great Northern electric locomotives 5025 and 5026, General Electric demonstration locomotives later returned to General Electric and sold to the Pennsylvania Railroad in Skykomish, Washington, 1952. Photograph by Wade Stevenson.

Great Northern electric locomotives 5025 and 5026, General Electric demonstration locomotives later returned to General Electric and sold to the Pennsylvania Railroad in Skykomish, Washington, 1952. Photograph by Wade Stevenson.

Great Northern electric locomotives 5025 and 5026, General Electric demonstration locomotives later returned to General Electric and sold to the Pennsylvania Railroad in Skykomish, Washington, 1952. Photograph by Wade Stevenson.