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
- 3713 more...
- ItemBB018316 - Northern Pacific Engineering Drawing: Abutment Number 1 Detail, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB018317 - Northern Pacific Engineering Drawing: Abutment Number 7, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB018318 - Northern Pacific Engineering Drawing: Abutment Number 7 Detail, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB018319 - Northern Pacific Engineering Drawing: Pier Number 2, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB018320 - Northern Pacific Engineering Drawing: Pier Number 3, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB018321 - Northern Pacific Engineering Drawing: Pier Number 4, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB018322 - Northern Pacific Engineering Drawing: Pier Number 5, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB018323 - Northern Pacific Engineering Drawing: Pier Number 6, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB018324 - Northern Pacific Engineering Drawing: Floor Beam/Stringer Layout, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- 4006 more...