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
- 7410 more...
- ItemBB034167 - Northern Pacific Engineering Drawing: Lift Span and Elevation, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034168 - Northern Pacific Engineering Drawing: Modification of Existing Piers, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034169 - Northern Pacific Engineering Drawing: Approach Span, Girder Span, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034170 - Northern Pacific Engineering Drawing: Approach Span - Frame and Floor System, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034171 - Northern Pacific Engineering Drawing: Approach Span - Floor Beam and Sway Frame, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034172 - Northern Pacific Engineering Drawing: Approach Span - Truss Details, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034173 - Northern Pacific Engineering Drawing: Approach Span - Truss Details, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034174 - Northern Pacific Engineering Drawing: Approach Span - Truss Details, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034175 - Northern Pacific Engineering Drawing: Approach Span - Truss Details, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- 309 more...