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
- 7398 more...
- ItemBB034155 - Northern Pacific Engineering Drawing: Main Truss 1, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB034156 - Northern Pacific Engineering Drawing: Main Truss 2, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB034157 - Northern Pacific Engineering Drawing: Main Truss 3, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB034158 - Northern Pacific Engineering Drawing: Stringer Floor Beam, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB034159 - Northern Pacific Engineering Drawing: Port, Sway and Lateral Braces, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB034160 - Northern Pacific Engineering Drawing: Bearing, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB034161 - Northern Pacific Engineering Drawing: Accessory, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB034162 - Northern Pacific Engineering Drawing: Support Frame, Jump Span, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB034163 - Northern Pacific Engineering Drawing: Match Mark Diagram, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- 321 more...