Great Northern Engineering Drawing: Deck Plan, Bridge 418 - Foss River, Tonga, Washington, Line Segment 037, Milepost 1728.2. Sheet 193 - 1394 - 105, 1949.

Great Northern Engineering Drawing: Concrete Encasement, Bridge 418 - Foss River, Tonga, Washington, Line Segment 037, Milepost 1728.2. Sheet 193 - 1394 - 146, 1957.

Great Northern Engineering Drawing: Bill of Material, Bridge 418 - Foss River, Tonga, Washington, Line Segment 037, Milepost 1728.2. Sheet 193 - 1394 - 158, 1900.

Great Northern Engineering Drawing: Abutment Details, Bridge 418 - Foss River, Tonga, Washington, Line Segment 037, Milepost 1728.2. Sheet 193 - 1394 - 153, 1970.

Great Northern Engineering Drawing: 40 and 48 Foot Girder Web, Bridge 418 - Foss River, Tonga, Washington, Line Segment 037, Milepost 1728.2. Sheet 193 - 1394 - 100, 1900.

Great Northern Engineering Drawing: 32 Foot Deck Plate Girder (DPG) Span, Bridge 418 - Foss River, Tonga, Washington, Line Segment 037, Milepost 1728.2. Sheet 193 - 1394 - 154, 1900.

Great Northern Engineering Drawing: 32 Foot Deck Plate Girder (DPG) Span, Bridge 418 - Foss River, Tonga, Washington, Line Segment 037, Milepost 1728.2. Sheet 193 - 1394 - 106, 1900.

AFE, Series II, Number 91855, Tonga, Washington, October 23, 1959, Sale of Timber on Right of Way. Located in folder 'Tonga'. Other subject categories: Miscellaneous. Initial cataloger's disposition code: Z, File not retained

AFE, Series I, Number 9040, Tonga, Washington, March 17, 1905, Remove Spur -- 1 Mile West. Located in folder 'Tonga'. Other subject categories: Track. Initial cataloger's disposition code: X, AFE itself not found but referenced in other documents

AFE, Series II, Number 88458, Tonga, Washington, September 21, 1956, Easement to Forest Service. Located in folder 'Tonga'. Other subject categories: Property. Initial cataloger's disposition code: Z, File not retained