Railroad Archives Online
- FondsD0027 - Timothy Miller Collection
- Seri003 - Great Northern Railway Company (U.S.)
- Subseri009 - Engineering Records
- 008 - Physical plant drawing
- 008 - Tunnels
- 156 lebih...
- ItemStruc001575 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- ItemStruc001576 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- ItemStruc001577 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- ItemStruc001578 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- ItemStruc001579 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1957
- ItemStruc001580 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1957
- ItemStruc001581 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- ItemStruc001582 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1957
- ItemStruc001583 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1957
- 187 lebih...