Railroad Archives Online
- FondsD0027 - Timothy Miller Collection
- Seri003 - Great Northern Railway Company (U.S.)
- Subseri009 - Engineering Records
- 008 - Physical plant drawing
- 008 - Tunnels
- 244 lebih...
- ItemStruc004473 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1966
- ItemStruc004474 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1973
- ItemStruc004475 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1973
- ItemStruc004476 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1974
- ItemStruc004477 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, undated
- ItemStruc004478 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- ItemStruc004479 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1973
- ItemStruc004480 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1969
- ItemStruc004481 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- 99 lebih...