Railroad Archives Online
- フォンドD0027 - Timothy Miller Collection
- シリーズ003 - Great Northern Railway Company (U.S.)
- サブシリーズ009 - Engineering Records
- 008 - Physical plant drawing
- 008 - Tunnels
- 284 more...
- アイテムStruc004513 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- アイテムStruc004514 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- アイテムStruc004515 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- アイテムStruc004516 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- アイテムStruc004517 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- アイテムStruc004518 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- アイテムStruc004519 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- アイテムStruc004520 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- アイテムStruc004521 - Great Northern Engineering Drawing, Flathead Tunnel, Montana, 1971
- 59 more...