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
- 5479 more...
- ItemBB020575 - Northern Pacific Engineering Drawing: Shop Plan - Floor Beams, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020576 - Northern Pacific Engineering Drawing: Shop Plan - Floor Beams, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020577 - Northern Pacific Engineering Drawing: Shop Plan - Floor Beams, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020578 - Northern Pacific Engineering Drawing: Shop Plan - Floor Beams, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020579 - Northern Pacific Engineering Drawing: Shop Plan - Stringers, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020580 - Northern Pacific Engineering Drawing: Shop Plan - Stringers, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020581 - Northern Pacific Engineering Drawing: Shop Plan - Walk Plate, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020582 - Northern Pacific Engineering Drawing: Shop Plan - Walk Plate, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020583 - Northern Pacific Engineering Drawing: Shop Plan - Walk Plate, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- 2240 more...