Railroad Archives Online
- CollectionD0027 - Timothy Miller Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1009 - Engineering Records
- Subseries Level 2008 - Physical plant drawing
- Subseries Level 3001 - Bridges
- 5759 more...
- ItemBB020869 - Northern Pacific Engineering Drawing: General Plan, Bridge 92 - Clark Fork River, West of Colby, Montana, 1899
- ItemBB020870 - Northern Pacific Engineering Drawing: Abutment Number 1, Bridge 92 - Clark Fork River, West of Colby, Montana, undated
- ItemBB020871 - Northern Pacific Engineering Drawing: Abutment Number 13, Bridge 92 - Clark Fork River, West of Colby, Montana, undated
- ItemBB020872 - Northern Pacific Engineering Drawing: Supports for Telegraph Post, Bridge 92 - Clark Fork River, West of Colby, Montana, undated
- ItemBB020873 - Northern Pacific Engineering Drawing: Piers 2/3, Bridge 92 - Clark Fork River, West of Colby, Montana, undated
- ItemBB020874 - Northern Pacific Engineering Drawing: Pier 12, Bridge 92 - Clark Fork River, West of Colby, Montana, undated
- ItemBB020875 - Northern Pacific Engineering Drawing: Deck Details, Bridge 92 - Clark Fork River, West of Colby, Montana, 1955
- ItemBB020876 - Northern Pacific Engineering Drawing: Deck Plan, Bridge 92 - Clark Fork River, West of Colby, Montana, undated
- ItemBB020877 - Northern Pacific Engineering Drawing: Piers 6/7/8/9/10, Bridge 92 - Clark Fork River, West of Colby, Montana, undated
- 1960 more...