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
- 303 more...
- ItemBB014527 - Northern Pacific Engineering Drawing: Shop Plan - Tower Leg Plate, Bridge 7 - Marent Gulch, West of Nagos, Montana, undated
- ItemBB014528 - Northern Pacific Engineering Drawing: Shop Plan - Tower Leg Plate, Bridge 7 - Marent Gulch, West of Nagos, Montana, undated
- ItemBB014529 - Northern Pacific Engineering Drawing: Shop Plan - Tower Leg Plate, Bridge 7 - Marent Gulch, West of Nagos, Montana, undated
- ItemBB014530 - Northern Pacific Engineering Drawing: Shop Plan - Grill Beams, Bridge 7 - Marent Gulch, West of Nagos, Montana, undated
- ItemBB014531 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 11, West of Olympia, Washington, undated
- ItemBB014532 - Northern Pacific Engineering Drawing: Replace West Span, Bridge 11, West of Olympia, Washington, 1936
- ItemBB014533 - Northern Pacific Engineering Drawing: Details of Girders, Bridge 11, West of Olympia, Washington, undated
- ItemBB014536 - Northern Pacific Engineering Drawing: General Plan, Bridge 50 - Little Blackfoot River, North of Deer Lodge, Montana, undated
- ItemBB014537 - Northern Pacific Engineering Drawing: Substructure Details, Bridge 50 - Little Blackfoot River, North of Deer Lodge, Montana, undated
- 7416 more...