Railroad Archives Online
- FondoD0027 - Timothy Miller Collection
- Serie003 - Great Northern Railway Company (U.S.)
- Subserie009 - Engineering Records
- 008 - Physical plant drawing
- 008 - Tunnels
- 60 más...
- Unidad documental simpleStruc001479 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Unidad documental simpleStruc001480 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1955
- Unidad documental simpleStruc001481 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1955
- Unidad documental simpleStruc001482 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1954
- Unidad documental simpleStruc001483 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1954
- Unidad documental simpleStruc001484 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1948
- Unidad documental simpleStruc001485 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1954
- Unidad documental simpleStruc001486 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1955
- Unidad documental simpleStruc001487 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- 283 más...