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
- 6645 more...
- ItemBB028609 - Northern Pacific Engineering Drawing: Shop Plan - Tower Detail, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028610 - Northern Pacific Engineering Drawing: Shop Plan - Tower Detail, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028611 - Northern Pacific Engineering Drawing: Shop Plan - Bracket Detail, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028612 - Northern Pacific Engineering Drawing: Shop Plan - Bottom Chord, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028613 - Northern Pacific Engineering Drawing: Shop Plan - Handrail, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028614 - Northern Pacific Engineering Drawing: Shop Plan - Tower House, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028615 - Northern Pacific Engineering Drawing: Shop Plan - Tower House, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028616 - Northern Pacific Engineering Drawing: Shop Plan - Tower House, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028617 - Northern Pacific Engineering Drawing: Shop Plan - Tower House, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- 1074 more...