Railroad Archives Online
- FondD0027 - Timothy Miller Collection
- Sorozat003 - Great Northern Railway Company (U.S.)
- Alsorozat009 - Engineering Records
- 008 - Physical plant drawing
- 008 - Tunnels
- 1%% több...
- IratdarabStruc004484 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- IratdarabStruc004485 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- IratdarabStruc004486 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- IratdarabStruc004487 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- IratdarabStruc004488 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- IratdarabStruc004489 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- IratdarabStruc004490 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- IratdarabStruc004491 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- IratdarabStruc004492 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- 1%% több...