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
- 2679 more...
- ItemBB017165 - Northern Pacific Engineering Drawing: Shop Plan - Bottom Chord, Bridge 113.1 - Big Blackfoot River, West of Bonner, Montana, undated
- ItemBB017166 - Northern Pacific Engineering Drawing: Shop Plan - Internal Posts, Bridge 113.1 - Big Blackfoot River, West of Bonner, Montana, undated
- ItemBB017167 - Northern Pacific Engineering Drawing: Shop Plan - Internal Posts, Bridge 113.1 - Big Blackfoot River, West of Bonner, Montana, undated
- ItemBB017168 - Northern Pacific Engineering Drawing: Shop Plan - Internal Posts, Bridge 113.1 - Big Blackfoot River, West of Bonner, Montana, undated
- ItemBB017169 - Northern Pacific Engineering Drawing: Shop Plan - Diagonal, Bridge 113.1 - Big Blackfoot River, West of Bonner, Montana, undated
- ItemBB017170 - Northern Pacific Engineering Drawing: Shop Plan - Portal, Bridge 113.1 - Big Blackfoot River, West of Bonner, Montana, undated
- ItemBB017171 - Northern Pacific Engineering Drawing: Shop Plan - Strut/Lateral, Bridge 113.1 - Big Blackfoot River, West of Bonner, Montana, undated
- ItemBB017172 - Northern Pacific Engineering Drawing: Shop Plan - End Flange Beam, Bridge 113.1 - Big Blackfoot River, West of Bonner, Montana, undated
- ItemBB017173 - Northern Pacific Engineering Drawing: Shop Plan - Internal Floor Beam, Bridge 113.1 - Big Blackfoot River, West of Bonner, Montana, undated
- 5040 more...