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
- 3674 more...
- ItemBB018277 - Northern Pacific Engineering Drawing: Shop Plan - Struts, Bridge 55 - Trout Creek, West of Trout Creek, Montana, undated
- ItemBB018278 - Northern Pacific Engineering Drawing: Approved Span Bottom Both Ends, Bridge 55 - Trout Creek, West of Trout Creek, Montana, undated
- ItemBB018279 - Northern Pacific Engineering Drawing: Stress Sheet, Bridge 55 - Trout Creek, West of Trout Creek, Montana, undated
- ItemBB018280 - Northern Pacific Engineering Drawing: Replace Gusset Plates, Bridge 55 - Trout Creek, West of Trout Creek, Montana, undated
- ItemBB018281 - Northern Pacific Engineering Drawing: Precast Concrete Block, Bridge 55 - Trout Creek, West of Trout Creek, Montana, undated
- ItemBB018282 - Northern Pacific Engineering Drawing: Shims Bearing Details, Bridge 55 - Trout Creek, West of Trout Creek, Montana, undated
- ItemBB018283 - Northern Pacific Engineering Drawing: New Abutment/Beam Spans, Bridge 55 - Trout Creek, West of Trout Creek, Montana, undated
- ItemBB018284 - Northern Pacific Engineering Drawing: 30 Foot Beam Spans, Bridge 55 - Trout Creek, West of Trout Creek, Montana, undated
- ItemBB018285 - Northern Pacific Engineering Drawing: Detail for Additional Beam Span, Bridge 55 - Trout Creek, West of Trout Creek, Montana, undated
- 4045 more...