Plat Map of Great Northern facilities at Mt Vernon, Washington, October 1, 1963, Sheet Number 2, Line Segment 50, showing the White Rock-Seattle line.

Plat Map of Great Northern facilities at Mt Vernon, Washington, October 1, 1963, Sheet Number 3, Line Segment 50, showing the White Rock-Seattle line.

Plat Map of Great Northern facilities at Mt Vernon, Washington, October 1, 1963, Sheet Number 4, Line Segment 50, showing the White Rock-Seattle line.

Plat Map of Great Northern facilities at Mt Vernon, Washington, October 1, 1963, Sheet Number 1, Line Segment 50, showing the White Rock-Seattle line.

Plat Map of Great Northern facilities at Mt Vernon, Washington, November 1, 1969, Sheet Number 1, Line Segment 50, showing the White Rock-Seattle line.

Plat Map of Great Northern facilities at Mt Vernon, Washington, November 1, 1969, Sheet Number 2, Line Segment 50, showing the White Rock-Seattle line.