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
- 284 more...
- ItemBB014508 - Northern Pacific Engineering Drawing: Shop Plan - Elevation, Bridge 7 - Marent Gulch, West of Nagos, Montana, undated
- ItemBB014509 - Northern Pacific Engineering Drawing: Shop Plan - General Plan, Bridge 7 - Marent Gulch, West of Nagos, Montana, undated
- ItemBB014510 - Northern Pacific Engineering Drawing: Shop Plan - General Plan, Bridge 7 - Marent Gulch, West of Nagos, Montana, undated
- ItemBB014511 - Northern Pacific Engineering Drawing: Shop Plan - Top and Bottom Struts, Bridge 7 - Marent Gulch, West of Nagos, Montana, undated
- ItemBB014512 - Northern Pacific Engineering Drawing: Shop Plan - Top and Bottom Struts, Bridge 7 - Marent Gulch, West of Nagos, Montana, undated
- ItemBB014513 - Northern Pacific Engineering Drawing: Shop Plan - Top Struts, Bridge 7 - Marent Gulch, West of Nagos, Montana, undated
- 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
- 7435 more...