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
- 6010 more...
- ItemBB025668 - Northern Pacific Engineering Drawing: Shop Plan - Tower Detail, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025669 - Northern Pacific Engineering Drawing: Shop Plan - Tower Detail, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025670 - Northern Pacific Engineering Drawing: Shop Plan - Tower Detail, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025671 - Northern Pacific Engineering Drawing: Shop Plan - Tower Detail, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025672 - Northern Pacific Engineering Drawing: Shop Plan - Tower Detail, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025673 - Northern Pacific Engineering Drawing: Shop Plan - End Post, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025674 - Northern Pacific Engineering Drawing: Shop Plan - End Post, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025675 - Northern Pacific Engineering Drawing: Shop Plan - Lift Guard, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025676 - Northern Pacific Engineering Drawing: Shop Plan - Lift Guard, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- 1709 more...