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
- 5496 more...
- ItemBB020592 - Northern Pacific Engineering Drawing: Shop Plan - Walk Plate, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020593 - Northern Pacific Engineering Drawing: Shop Plan - Walk Plate, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020594 - Northern Pacific Engineering Drawing: Shop Plan - Walk Plate, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020595 - Northern Pacific Engineering Drawing: Shop Plan - Walk Plate, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020596 - Northern Pacific Engineering Drawing: Shop Plan - Walk Plate, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020597 - Northern Pacific Engineering Drawing: Shop Plan - Walk Plate, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020598 - Northern Pacific Engineering Drawing: Shop Plan - Stringers, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020599 - Northern Pacific Engineering Drawing: Shop Plan - Stringers, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020600 - Northern Pacific Engineering Drawing: Shop Plan - Ballast Plate, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- 2223 more...