Railroad Archives Online
- D0027 - Timothy Miller Collection
- Ro`yxat003 - Great Northern Railway Company (U.S.)
- Ro`yxat-osti009 - Engineering Records
- 008 - Physical plant drawing
- 008 - Tunnels
- 99 more...
- Struc001518 - Great Northern Engineering Drawing, Cascade Tunnel at Berne, Washington, 1975
- Struc001519 - Great Northern Engineering Drawing, Cascade Tunnel at Berne, Washington, 1975
- Struc001520 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Struc001521 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Struc001522 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Struc001523 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, undated
- Struc001524 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Struc001525 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1957
- Struc001526 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- 244 more...