Railroad Archives Online
- ФондыD0027 - Timothy Miller Collection
- 003 - Great Northern Railway Company (U.S.)
- 009 - Engineering Records
- 008 - Physical plant drawing
- 008 - Tunnels
- 49 more...
- Struc001468 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Struc001469 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Struc001470 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Struc001471 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Struc001472 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Struc001473 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Struc001474 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Struc001475 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Struc001476 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1954
- 294 more...