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
- 7387 more...
- ItemBB034144 - Northern Pacific Engineering Drawing: Existing Condition Details, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB034145 - Northern Pacific Engineering Drawing: Truss Span and Stress Sheet, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB034146 - Northern Pacific Engineering Drawing: Truss Span and Pin Details, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB034147 - Northern Pacific Engineering Drawing: Truss Span and Post, Struts, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB034148 - Northern Pacific Engineering Drawing: Truss Span and Stringer Detail, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB034149 - Northern Pacific Engineering Drawing: Truss Span and Floor Beam Details, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB034150 - Northern Pacific Engineering Drawing: Truss Span and Portal Details, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB034151 - Northern Pacific Engineering Drawing: Truss Span and Ship Bill, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB034152 - Northern Pacific Engineering Drawing: Truss Span and Bearing Details, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- 332 more...