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
- 2670 more...
- ItemBB017156 - Northern Pacific Engineering Drawing: Deck Plate Girder/Through Plate Span, Bridge 113.1 - Big Blackfoot River, West of Bonner, Montana, undated
- ItemBB017157 - Northern Pacific Engineering Drawing: Shop Plan - Pin Span, Bridge 113.1 - Big Blackfoot River, West of Bonner, Montana, undated
- ItemBB017158 - Northern Pacific Engineering Drawing: Shop Plan - Packing Diagram, Bridge 113.1 - Big Blackfoot River, West of Bonner, Montana, undated
- ItemBB017159 - Northern Pacific Engineering Drawing: Shop Plan - End Post, Bridge 113.1 - Big Blackfoot River, West of Bonner, Montana, undated
- ItemBB017160 - Northern Pacific Engineering Drawing: Shop Plan - Top Chord, Bridge 113.1 - Big Blackfoot River, West of Bonner, Montana, undated
- ItemBB017161 - Northern Pacific Engineering Drawing: Shop Plan - Top Chord, Bridge 113.1 - Big Blackfoot River, West of Bonner, Montana, undated
- ItemBB017162 - Northern Pacific Engineering Drawing: Shop Plan - Top Chord, Bridge 113.1 - Big Blackfoot River, West of Bonner, Montana, undated
- ItemBB017163 - Northern Pacific Engineering Drawing: Shop Plan - End Post, Bridge 113.1 - Big Blackfoot River, West of Bonner, Montana, undated
- ItemBB017164 - Northern Pacific Engineering Drawing: Shop Plan - Bottom Chord, Bridge 113.1 - Big Blackfoot River, West of Bonner, Montana, undated
- 5049 more...