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
- 1075 more...
- ItemBB015366 - Northern Pacific Engineering Drawing: Bar List/Bend Diagram, Bridge 67 - Rock Creek, West of Tuscor, Montana, undated
- ItemBB015367 - Northern Pacific Engineering Drawing: Erection Diagram, Bridge 67 - Rock Creek, West of Tuscor, Montana, undated
- ItemBB015368 - Northern Pacific Engineering Drawing: Columns, Bridge 67 - Rock Creek, West of Tuscor, Montana, undated
- 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
- 6644 more...