Spokane, Portland and Seattle Railway Engineering Drawing: Deck Sketch, Bridge 66.4 - Little White Salmon River, east of Cooks, Washington, Line Segment 047, Milepost 66.32. Sheet NN - 434, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Bolts for Truss, Bridge 66.4 - Little White Salmon River, east of Cooks, Washington, Line Segment 047, Milepost 66.32. Sheet NN - 443, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: 50 Foot Deck Plate Girder (DPG), Bridge 66.4 - Little White Salmon River, east of Cooks, Washington, Line Segment 047, Milepost 66.32. Sheet AA411, undated.

Spokane, Portland and Seattle Railway Authorization for Expenditure (AFE), Cooks, Washington, undated.

Spokane, Portland and Seattle Railway Authorization for Expenditure (AFE). President's AFE Number 722. Grading wagon road on our right of way from depot at Cooks, Washington. Correspondence File Number 354. Vancouver Division. Other subject categories: Road Wagon.

Spokane, Portland and Seattle Railway Authorization for Expenditure (AFE). President's AFE Number 247. Culvert at milepost 65.59 near Cooks, Washington. Chief Engineer/Standard Maintenance Procedure AFE Number CE 302. Vancouver Division. Other subject categories: Culvert.

Spokane, Portland and Seattle Railway Authorization for Expenditure (AFE). President's AFE Number 1412. Build siding 610 feet long on south side of passing track at Cooks, Washington, to avoid delays to traffic in case of future slides. Chief Engineer/Standard Maintenance Procedure AFE Number CE 1522. Correspondence File Number 354. Vancouver Division. Other subject categories: Tracks Siding .

Spokane, Portland and Seattle Railway Authorization for Expenditure (AFE). President's AFE Number 738. Installing Hayes pipe connected Roundhouse derail at Cooks, Washington. Chief Engineer/Standard Maintenance Procedure AFE Number CE 821. Vancouver Division. Other subject categories: Derails.