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
- 6693 more...
- ItemBB028657 - Northern Pacific Engineering Drawing: Shop Plan - Floor Girder, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028658 - Northern Pacific Engineering Drawing: Shop Plan - Top Chord, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028659 - Northern Pacific Engineering Drawing: Shop Plan - Diagonals, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028660 - Northern Pacific Engineering Drawing: Shop Plan - Top Chord, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028661 - Northern Pacific Engineering Drawing: Shop Plan - Posts, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028662 - Northern Pacific Engineering Drawing: Shop Plan - Bottom Chord, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028663 - Northern Pacific Engineering Drawing: Shop Plan - Bottom Chord, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028664 - Northern Pacific Engineering Drawing: Shop Plan - Posts, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028665 - Northern Pacific Engineering Drawing: Shop Plan - Floor Girder, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- 1026 more...