Plat Map of Northern Pacific facilities at Snohomish, Washington, June 1, 1922, Sheet Number 2, Line Segment 403, showing the Seattle-Sumasÿline, logging spur, bridge approach.

Plat Map of Northern Pacific facilities at Snohomish, Washington, August 22, 1917, Sheet Number 1, Line Segment 403, showing the Seattle-Sumas line, north Snohomish.

Plat Map of Northern Pacific facilities at Snohomish, Washington, August 22, 1917, Sheet Number 2, Line Segment 403, showing the Seattle-Sumas line, north Snohomish.

Plat Map of Northern Pacific facilities at Snake River Junction, Washington, undated, Sheet Number 1, Line Segment 46, showing the Spokane-Pasco-Spokane, Portland, and Seattle Railway Junction line.

Plat Map of Northern Pacific facilities at Snake River Junction, Washington, undated, Sheet Number 2, Line Segment 46, showing the Spokane-Pasco-Spokane, Portland, and Seattle Railway Junction line.

Plat Map of Northern Pacific facilities at Smeltz, Oregon, April 2, 1917, Sheet Number 2, Line Segment 452, showing the Smeltz-Athena line.

Plat Map of Northern Pacific facilities at Smeltz, Oregon, April 2, 1917, Sheet Number 1, Line Segment 452, showing the Smeltz-Athena line.

Plat Map of Northern Pacific facilities at Slater, Washington, September 26, 1912, Sheet Number 1, Line Segment 450, showing the Ainsworth Junction-Dayton line.

Plat Map of Northern Pacific facilities at Slater, Washington, September 26, 1912, Sheet Number 2, Line Segment 450, showing the Ainsworth Junction-Dayton line.

Plat Map of Northern Pacific facilities at Skyline, Montana, undated, Sheet Number 1, Line Segment 42, showing the Helena-Paradise line.

Plat Map of Northern Pacific facilities at Skyline, Montana, undated, Sheet Number 2, Line Segment 42, showing the Helena-Paradise line.

Plat Map of Northern Pacific facilities at Skones, Montana, December 1, 1913, Sheet Number 1, Line Segment 326, showing the Logan-Butte line.

Plat Map of Northern Pacific facilities at Simenson, Washington, July 1, 1954, Sheet Number 2, Line Segment 379, showing the Odair-Connell line.

Plat Map of Northern Pacific facilities at Simenson, Washington, July 1, 1954, Sheet Number 1, Line Segment 379, showing the Odair-Connell line.

Plat Map of Northern Pacific facilities at Silverdale, Washington, March 1, 1953, Sheet Number 1, Line Segment 426, showing the Bangor-Shelton line.

Plat Map of Northern Pacific facilities at Silverdale, Washington, March 1, 1953, Sheet Number 2, Line Segment 426, showing the Bangor-Shelton line.

Plat Map of Northern Pacific facilities at Silver Star, Montana, December 14, 1914, Sheet Number 1, Line Segment 339, showing the Whitehall-Alder line.

Plat Map of Northern Pacific facilities at Silver Star, Montana, December 14, 1914, Sheet Number 2, Line Segment 339, showing the Whitehall-Alder line.

Plat Map of Northern Pacific facilities at Silver Bow, Montana, undated, Sheet Number 2, Line Segment 327, showing the Butte-Garrisonÿline.

Plat Map of Northern Pacific facilities at Silver Bow, Montana, undated, Sheet Number 1, Line Segment 327, showing the Butte-Garrison line.

Plat Map of Northern Pacific facilities at Silver Bow, Montana, undated, Sheet Number 3, Line Segment 327, showing the Butte-Garrison line.

Plat Map of Northern Pacific facilities at Sheridan, Montana, October 5, 1916, Drawing Number 87235, Sheet Number 1, Line Segment 339, showing the Whitehall-Alder line.

Plat Map of Northern Pacific facilities at Sheridan, Montana, October 5, 1916, Drawing Number 87235, Sheet Number 2, Line Segment 339, showing the Whitehall-Alder line.

Plat Map of Northern Pacific facilities at Shelton, Washington, undated, Sheet Number 2, Line Segment 425, showing the Shelton-Elma line, Simpson Logging Company trackage.

Plat Map of Northern Pacific facilities at Shelton, Washington, March 1, 1953, Sheet Number 1, Line Segment 425, showing the Shelton-Elma line.

Plat Map of Northern Pacific facilities at Shelton, Washington, March 1, 1953, Sheet Number 3, Line Segment 425, showing the Shelton-Elma line.

Plat Map of Northern Pacific facilities at Shelton, Washington, March 1, 1953, Sheet Number 4, Line Segment 425, showing the Shelton-Elma line.

Plat Map of Northern Pacific facilities at Shelton, Washington, September 1, 1926, Sheet Number 2, Line Segment 425, showing the Shelton-Elma line.

Plat Map of Northern Pacific facilities at Shelton, Washington, September 1, 1926, Sheet Number 1, Line Segment 425, showing the Shelton-Elma line.

Plat Map of Northern Pacific facilities at Shano, Washington, October 1, 1956, Sheet Number 1, Line Segment 378, showing the Cheney-Coulee City line.