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
- 6668 more...
- ItemBB028632 - Northern Pacific Engineering Drawing: Shop Plan - Tower Detail, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028633 - Northern Pacific Engineering Drawing: Shop Plan - Bottom Chord, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028634 - Northern Pacific Engineering Drawing: Shop Plan - Bottom Chord, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028635 - Northern Pacific Engineering Drawing: Shop Plan - Bottom Chord, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028636 - Northern Pacific Engineering Drawing: Shop Plan - Guard Railing Base, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028637 - Northern Pacific Engineering Drawing: Shop Plan - Girder, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028638 - Northern Pacific Engineering Drawing: Shop Plan - Girder, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028639 - Northern Pacific Engineering Drawing: Shop Plan - Top Chord, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028640 - Northern Pacific Engineering Drawing: Shop Plan - Top Chord, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- 1051 more...