Railroad Archives Online
- ФондыD0027 - Timothy Miller Collection
- 003 - Great Northern Railway Company (U.S.)
- 009 - Engineering Records
- 008 - Physical plant drawing
- 008 - Tunnels
- 232 more...
- Struc001671 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Struc001672 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1955
- Struc001673 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1955
- Struc001674 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1951
- Struc001675 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Struc001676 - Great Northern Engineering Drawing, Cascade Tunnel, Washington, 1956
- Struc004467 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1968
- Struc004468 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1974
- Struc004469 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1973
- 111 more...