Sanborn Fire Map of Concrete, Washington December, 1925 revised July, 1929, Sheet 3.

Sanborn Fire Map of Concrete, Washington December, 1925 revised July, 1929, Sheet 1.

Plat Map of Great Northern facilities at Concrete, Washington, undated, Sheet Number 1, Line Segment 409, showing the Concrete-Anacortes line.

Plat Map of Great Northern facilities at Concrete, Washington, undated, Sheet Number 2, Line Segment 409, showing the Concrete-Anacortes line.

Plat Map of Great Northern facilities at Concrete, Washington, April 1, 1964, Sheet Number 1, Line Segment 409, showing the Concrete-Anacortes line.

Plat Map of Great Northern facilities at Concrete, Washington, April 1, 1964, Sheet Number 2, Line Segment 409, showing the Concrete-Anacortes line.