Spokane, Portland and Seattle Railway Authorization for Expenditure (AFE). President's AFE Number 9. 1083 foot side track at Alderdale, Washington. Correspondence File Number 337-1. Vancouver Division. Other subject categories: Tracks Side.

Spokane, Portland and Seattle Railway Authorization for Expenditure (AFE), Alderdale, Washington, 1912.

Spokane, Portland and Seattle Railway Authorization for Expenditure (AFE). President's AFE Number 760. Erecting a 12 foot by 32 foot third class depot at Alderdale, Washington. Chief Engineer/Standard Maintenance Procedure AFE Number CE 834. Correspondence File Number 337. Vancouver Division. Other subject categories: Structure Depot.

Spokane, Portland and Seattle Railway Authorization for Expenditure (AFE). President's AFE Number 1011. Constructing one car hog pen at Alderdale, Washington. Correspondence File Number 337. Vancouver Division. Other subject categories: Structure Stock Pen.