Railroad Archives Online
- SafnD0027 - Timothy Miller Collection
- Skjalaflokkur003 - Great Northern Railway Company (U.S.)
- Undirskjalaflokkur009 - Engineering Records
- 008 - Physical plant drawing
- 008 - Tunnels
- 308 more...
- EiningStruc004537 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- EiningStruc004538 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- EiningStruc004539 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- EiningStruc004540 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- EiningStruc004541 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- EiningStruc004542 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- EiningStruc004543 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- EiningStruc004544 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- EiningStruc004545 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- 35 more...