Great Northern Engineering Drawing: Cascade Tunnel, Washington, prepared in 1951. Burlington Northern File Number 9531, Reference Number 10102.

Great Northern Engineering Drawing: Cascade Tunnel, Washington, prepared in 1950. Burlington Northern File Number 9531, Reference Number 10104.

Great Northern Engineering Drawing: Cascade Tunnel, Washington, prepared in 1948. Burlington Northern File Number 9531, Reference Number 10102.

AFE, Great Northern Railway General Manager, Number 999, Cascade Tunnel, Washington, March 19, 1905, Smoke Jack. Located in folder 'Cascade Tunnel'. Other subject categories: Roundhouse. Initial cataloger's disposition code: X, AFE itself not found but referenced in other documents

AFE, Great Northern Railway General Manager, Number 955, Cascade Tunnel, Washington, October 31, 1893, Covered Turntable and Connection to 2-Stall Roundhouse. Located in folder 'Cascade Tunnel'. Other subject categories: Tools. Initial cataloger's disposition code: X, AFE itself not found but referenced in other documents

AFE, Series II, Number 9516, Cascade Tunnel, Washington, December 2, 1918, Replace Turntable Tractor. Located in folder 'Cascade Tunnel'. Other subject categories: Tools. Initial cataloger's disposition code: Z, File not retained

AFE, Series II, Number 9394, Cascade Tunnel, Washington, November 1, 1918, Relay with 90 Pound Rail in Tunnel. Located in folder 'Cascade Tunnel'. Other subject categories: Relay. Initial cataloger's disposition code: Z, File not retained

AFE, Series I, Number 9314, Cascade Tunnel, Washington, March 17, 1905, Gasoline Houses and Tanks. Located in folder 'Cascade Tunnel'. Other subject categories: Miscellaneous. Initial cataloger's disposition code: X, AFE itself not found but referenced in other documents

AFE, Series I, Number 8879, Cascade Tunnel, Washington, March 17, 1905, Rebuild Bridge 389. Located in folder 'Berne'. Other subject categories: Bridge. Initial cataloger's disposition code: X, AFE itself not found but referenced in other documents