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
- 2948 more...
- ItemBB017479 - Northern Pacific Engineering Drawing: Shop Plan - Top Lateral Brace, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- ItemBB017480 - Northern Pacific Engineering Drawing: Shop Plan - Top and Bottom Struts, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- ItemBB017481 - Northern Pacific Engineering Drawing: Shop Plan - Cross Frame and Stringers, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- ItemBB017482 - Northern Pacific Engineering Drawing: Shop Plan - Bent Diagonal, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- ItemBB017483 - Northern Pacific Engineering Drawing: Shop Plan - Temporary Stringers, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- ItemBB017484 - Northern Pacific Engineering Drawing: Shop Plan - Post, Floor Beams, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- ItemBB017485 - Northern Pacific Engineering Drawing: Shop Plan - Stringer Details, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- ItemBB017486 - Northern Pacific Engineering Drawing: Shop Plan - Stringer Details, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- ItemBB017487 - Northern Pacific Engineering Drawing: Shop Plan - Portal Brace, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- 4771 more...