Spokane, Coeur d'Alene and Palouse Railroad Plat Map, Thornton, Washington, Thornton Ditch. Milepost 55+, Spokane, Coeur d'Alene and Palouse Washington Volume 3 Map 04a, undated.

Spokane, Coeur d'Alene and Palouse Railroad Plat Map, Thornton to Trestle Creek, Washington, Milepost 53-56, Spokane, Coeur d'Alene and Palouse Washington Volume 3 Map 04, undated.

Plat Map of Great Northern facilities at Thornton, Washington, undated, Sheet Number 2, Line Segment 383, showing the Colfax-Spring Valley line.

Plat Map of Great Northern facilities at Thornton, Washington, undated, Sheet Number 1, Line Segment 383, showing the Colfax-Spring Valley line.

Plat Map of Great Northern facilities at Thornton, Washington, December 1, 1927, Sheet Number 2, Line Segment 383, showing the Colfax-Spring Valley line.

Plat Map of Great Northern facilities at Thornton, Washington, December 1, 1927, Sheet Number 1, Line Segment 383, showing the Colfax-Spring Valley line.