Railroad Archives Online
- CollectionD0027 - Timothy Miller Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1009 - Engineering Records
- Subseries Level 2008 - Physical plant drawing
- Subseries Level 3007 - Track
- 13 more...
- ItemStruc001715 - Great Northern Engineering Drawing, Line Change at Libby, Montana, 1969
- ItemStruc001716 - Great Northern Engineering Drawing, Line Change at Libby, Montana, 1964
- ItemStruc001717 - Great Northern Engineering Drawing, Line Change at Libby, Montana, 1969
- ItemStruc001718 - Great Northern Engineering Drawing, Line Change at Libby, Montana, 1970
- ItemStruc001719 - Great Northern Engineering Drawing, Line Change at Stryker, Montana, 1969
- ItemStruc001720 - Great Northern Engineering Drawing, Line Change at Kootenai River, Montana, 1969
- ItemStruc001721 - Great Northern Engineering Drawing, Line Change at Kootenai River, Montana, 1969
- ItemStruc001722 - Great Northern Engineering Drawing, Line Change at Kootenai River, Montana, 1969
- ItemStruc001723 - Great Northern Engineering Drawing, Line Change at Kootenai River, Montana, 1969
- 21 more...