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
- 7462 more...
- ItemBB034219 - Northern Pacific Engineering Drawing: Radar System, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034220 - Northern Pacific Engineering Drawing: Terminal Box and Cable Layout, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034221 - Northern Pacific Engineering Drawing: Truss Span Stress Sheet, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034222 - Northern Pacific Engineering Drawing: Tower and Deck Girder Span, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034223 - Northern Pacific Engineering Drawing: 246 Foot Truss Span Sheet, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034224 - Northern Pacific Engineering Drawing: 171 Foot Truss Span Sheet, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034225 - Northern Pacific Engineering Drawing: 156 Foot Truss Span Sheet, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034226 - Northern Pacific Engineering Drawing: Substructure Plans, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034227 - Northern Pacific Engineering Drawing: Project Plan and Elevation, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, 1968
- 257 more...