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
- 6719 more...
- ItemBB028683 - Northern Pacific Engineering Drawing: Shop Plan - Grillage, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028684 - Northern Pacific Engineering Drawing: Shop Plan - Walkway, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028685 - Northern Pacific Engineering Drawing: Shop Plan - Walkway, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028686 - Northern Pacific Engineering Drawing: Shop Plan - Blast Plate, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028687 - Northern Pacific Engineering Drawing: Shop Plan - Blast Plate, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028688 - Northern Pacific Engineering Drawing: Shop Plan - Operating House, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028689 - Northern Pacific Engineering Drawing: Shop Plan - Grillage, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028690 - Northern Pacific Engineering Drawing: Shop Plan - Grillage, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028691 - Northern Pacific Engineering Drawing: Shop Plan - Grillage, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- 1000 more...