Railroad Archives Online
- FondoD0027 - Timothy Miller Collection
- Serie003 - Great Northern Railway Company (U.S.)
- Subserie009 - Engineering Records
- 008 - Physical plant drawing
- 008 - Tunnels
- 142 más...
- Unidad documental simpleStruc001561 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Unidad documental simpleStruc001562 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Unidad documental simpleStruc001563 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Unidad documental simpleStruc001564 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Unidad documental simpleStruc001565 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Unidad documental simpleStruc001566 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Unidad documental simpleStruc001567 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Unidad documental simpleStruc001568 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Unidad documental simpleStruc001569 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- 201 más...