Railroad Archives Online
- FondoD0027 - Timothy Miller Collection
- Serie003 - Great Northern Railway Company (U.S.)
- Subserie009 - Engineering Records
- 008 - Physical plant drawing
- 008 - Tunnels
- 227 más...
- Unidad documental simpleStruc001666 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1955
- Unidad documental simpleStruc001667 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Unidad documental simpleStruc001668 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Unidad documental simpleStruc001669 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Unidad documental simpleStruc001670 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Unidad documental simpleStruc001671 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Unidad documental simpleStruc001672 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1955
- Unidad documental simpleStruc001673 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1955
- Unidad documental simpleStruc001674 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1951
- 116 más...