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
- 290 more...
- ItemBB014514 - Northern Pacific Engineering Drawing: Shop Plan - Bracing, Bridge 7 - Marent Gulch, West of Nagos, Montana, undated
- ItemBB014515 - Northern Pacific Engineering Drawing: Shop Plan - Gusset Plate, Bridge 7 - Marent Gulch, West of Nagos, Montana, undated
- ItemBB014516 - Northern Pacific Engineering Drawing: Shop Plan - Transverse Diagonal, Bridge 7 - Marent Gulch, West of Nagos, Montana, undated
- ItemBB014517 - Northern Pacific Engineering Drawing: Shop Plan - Transverse Diagonal, Bridge 7 - Marent Gulch, West of Nagos, Montana, undated
- ItemBB014518 - Northern Pacific Engineering Drawing: Shop Plan - Gusset Plate, Bridge 7 - Marent Gulch, West of Nagos, Montana, undated
- ItemBB014519 - Northern Pacific Engineering Drawing: Shop Plan - Longitudinal Diagonal, Bridge 7 - Marent Gulch, West of Nagos, Montana, undated
- ItemBB014520 - Northern Pacific Engineering Drawing: Shop Plan - Steel Bases, Bridge 7 - Marent Gulch, West of Nagos, Montana, undated
- ItemBB014521 - Northern Pacific Engineering Drawing: Shop Plan - Frame Placement, Bridge 7 - Marent Gulch, West of Nagos, Montana, undated
- ItemBB014522 - Northern Pacific Engineering Drawing: Shop Plan - Frame Placement, Bridge 7 - Marent Gulch, West of Nagos, Montana, undated
- 7429 more...