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
- 5487 more...
- ItemBB020583 - Northern Pacific Engineering Drawing: Shop Plan - Walk Plate, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020584 - Northern Pacific Engineering Drawing: Shop Plan - Walk Plate, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020585 - Northern Pacific Engineering Drawing: Shop Plan - Walk Plate, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020586 - Northern Pacific Engineering Drawing: Shop Plan - Walk Plate, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020587 - Northern Pacific Engineering Drawing: Shop Plan - Walk Plate, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020588 - Northern Pacific Engineering Drawing: Shop Plan - Walk Plate, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020589 - Northern Pacific Engineering Drawing: Shop Plan - Walk Plate, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020590 - Northern Pacific Engineering Drawing: Shop Plan - Walk Plate, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020591 - Northern Pacific Engineering Drawing: Shop Plan - Walk Plate, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- 2232 more...