Railroad Archives Online
- FondoD0027 - Timothy Miller Collection
- Serie003 - Great Northern Railway Company (U.S.)
- Subserie009 - Engineering Records
- 008 - Physical plant drawing
- 008 - Tunnels
- 216 más...
- Unidad documental simpleStruc001655 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Unidad documental simpleStruc001656 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1955
- Unidad documental simpleStruc001657 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Unidad documental simpleStruc001658 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Unidad documental simpleStruc001659 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Unidad documental simpleStruc001660 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1955
- Unidad documental simpleStruc001661 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1955
- Unidad documental simpleStruc001662 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Unidad documental simpleStruc001663 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- 127 más...