Railroad Archives Online
- ΑρχείοD0027 - Timothy Miller Collection
- 003 - Great Northern Railway Company (U.S.)
- Υποσειρά009 - Engineering Records
- 008 - Physical plant drawing
- 008 - Tunnels
- 281 more...
- ΤεκμήριοStruc004510 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- ΤεκμήριοStruc004511 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- ΤεκμήριοStruc004512 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- ΤεκμήριοStruc004513 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- ΤεκμήριοStruc004514 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- ΤεκμήριοStruc004515 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- ΤεκμήριοStruc004516 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- ΤεκμήριοStruc004517 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- ΤεκμήριοStruc004518 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- 62 more...