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
- 265 more...
- ItemBB014489 - Northern Pacific Engineering Drawing: Bearing and Connect Details, Bridge 7 - Marent Gulch, West of Nagos, Montana, undated
- ItemBB014490 - Northern Pacific Engineering Drawing: Erection Column Reinforcement, Bridge 7 - Marent Gulch, West of Nagos, Montana, 1944
- ItemBB014491 - Northern Pacific Engineering Drawing: Erection Column Reinforcement, Bridge 7 - Marent Gulch, West of Nagos, Montana, 1944
- ItemBB014492 - Northern Pacific Engineering Drawing: Reinforce Bents, Bridge 7 - Marent Gulch, West of Nagos, Montana, 1945
- ItemBB014493 - Northern Pacific Engineering Drawing: Proposed Repairs, Bridge 7 - Marent Gulch, West of Nagos, Montana, 1945
- ItemBB014494 - Northern Pacific Engineering Drawing: Repairs Piers, Bridge 7 - Marent Gulch, West of Nagos, Montana, 1945
- ItemBB014495 - Northern Pacific Engineering Drawing: Pier Encasement Details, Bridge 7 - Marent Gulch, West of Nagos, Montana, undated
- ItemBB014496 - Northern Pacific Engineering Drawing: Reinforce Towers, Bridge 7 - Marent Gulch, West of Nagos, Montana, 1941
- ItemBB014497 - Northern Pacific Engineering Drawing: Reinforce Towers, Bridge 7 - Marent Gulch, West of Nagos, Montana, 1941
- 7454 more...