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
- 5994 more...
- ItemBB025652 - Northern Pacific Engineering Drawing: Shop Plan - Grillage, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025653 - Northern Pacific Engineering Drawing: Shop Plan - Grillage, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025654 - Northern Pacific Engineering Drawing: Shop Plan - Grillage, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025655 - Northern Pacific Engineering Drawing: Shop Plan - Grillage, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025656 - Northern Pacific Engineering Drawing: Shop Plan - Iron Plate, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025657 - Northern Pacific Engineering Drawing: Shop Plan - Walkway, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025658 - Northern Pacific Engineering Drawing: Shop Plan - Walkway, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025659 - Northern Pacific Engineering Drawing: Shop Plan - Operating House, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025660 - Northern Pacific Engineering Drawing: Shop Plan - Operating House, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- 1725 more...