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
- 1324 more...
- ItemBB015653 - Northern Pacific Engineering Drawing: Detail of Floor System, Bridge 7 - Marent Gulch, West of Nagos, Montana, undated
- ItemBB015654 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 7 - Marent Gulch, West of Nagos, Montana, 1953
- ItemBB015655 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 7 - Marent Gulch, West of Nagos, Montana, 1953
- ItemBB015656 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 7 - Marent Gulch, West of Nagos, Montana, 1953
- ItemBB015657 - Northern Pacific Engineering Drawing: Detail of Rail/Walk, Bridge 7 - Marent Gulch, West of Nagos, Montana, undated
- ItemBB015658 - Northern Pacific Engineering Drawing: Shop Plan - Erection Diagram, Bridge 7 - Marent Gulch, West of Nagos, Montana, undated
- ItemBB015659 - Northern Pacific Engineering Drawing: Shop Plan - End Bearings, Bridge 7 - Marent Gulch, West of Nagos, Montana, undated
- ItemBB015660 - Northern Pacific Engineering Drawing: Shop Plan - Truss Section, Bridge 7 - Marent Gulch, West of Nagos, Montana, undated
- ItemBB015661 - Northern Pacific Engineering Drawing: Shop Plan - Top Chord, Bridge 7 - Marent Gulch, West of Nagos, Montana, undated
- 6395 more...