AFE, Series I, Number 16665, Tonga, Washington, March 23, 1905, Additional Passing Track. Located in folder 'Tonga'. Other subject categories: Track. Initial cataloger's disposition code: X, AFE itself not found but referenced in other documents

AFE, Great Northern Railway General Manager, Number 1649, Tonga, Washington, May 18, 1906, Seattle-Boston Copper Spur. 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 14289, Tonga, Washington, April 3, 1905, Rip Rap Bridge 419. Located in folder 'Tonha'. Other subject categories: Grading/Ditching/Roads/Culverts. Initial cataloger's disposition code: X, AFE itself not found but referenced in other documents

AFE, Series II, Number 14168, Tonga, Washington, June 9, 1920, Replace Culverts. Located in folder 'Tonga'. Other subject categories: Grading/Ditching/Roads/Culverts. Initial cataloger's disposition code: Z, File not retained

AFE, Series II, Number 1288, Tonga, Washington, February 9, 1916, Culverts. Located in folder 'Tonga'. Other subject categories: Grading/Ditching/Roads/Culverts. Initial cataloger's disposition code: Z, File not retained

AFE, Series I, Number 12100, Tonga, Washington, March 17, 1906, Extend Passing Track West 700? to 3000?. Located in folder 'Tonga'. Other subject categories: Track. Initial cataloger's disposition code: M, AFE Sheet page 1, with map or other paper

AFE, Series II, Number 11932, Tonga, Washington, November 17, 1919, Foss River Lumber Company Connection. Located in folder 'Tonga'. Other subject categories: Track. Initial cataloger's disposition code: M, AFE Sheet page 1, with map or other paper

Burlington Northern Engineering Drawing: Deck Plan, Bridge 419.2 - Anthracite Creek (formerly Great Northern), west of Tonga, Washington, Line Segment 037, Milepost 1730.5. Sheet 262 - 4040 - 14, 1984.