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
- 1078 more...
- ItemBB015369 - Northern Pacific Engineering Drawing: Struts, Bridge 67 - Rock Creek, West of Tuscor, Montana, undated
- ItemBB015370 - Northern Pacific Engineering Drawing: Transverse Bracing, Bridge 67 - Rock Creek, West of Tuscor, Montana, undated
- ItemBB015371 - Northern Pacific Engineering Drawing: Longitudinal Bracing, Bridge 67 - Rock Creek, West of Tuscor, Montana, undated
- ItemBB015372 - Northern Pacific Engineering Drawing: 40 Foot Tower Span, Bridge 67 - Rock Creek, West of Tuscor, Montana, undated
- ItemBB015373 - Northern Pacific Engineering Drawing: 70 Foot Girder Span, Bridge 67 - Rock Creek, West of Tuscor, Montana, undated
- ItemBB015374 - Northern Pacific Engineering Drawing: End Stiffener Angle Repair, Bridge 67 - Rock Creek, West of Tuscor, Montana, undated
- ItemBB015375 - Northern Pacific Engineering Drawing: Old Bridge 50 Foot Steel, Bridge 67 - Rock Creek, West of Tuscor, Montana, undated
- ItemBB015376 - Northern Pacific Engineering Drawing: Old Bridge 50 Foot Steel, Bridge 67 - Rock Creek, West of Tuscor, Montana, undated
- ItemBB015377 - Northern Pacific Engineering Drawing: Old Bridge 50 Foot Steel, Bridge 67 - Rock Creek, West of Tuscor, Montana, undated
- 6641 more...