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
- 7565 more...
- ItemBB034322 - Northern Pacific Engineering Drawing: Shop Plan - Top Lateral Detail, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034323 - Northern Pacific Engineering Drawing: Shop Plan - Top Lateral Braces, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034324 - Northern Pacific Engineering Drawing: Shop Plan - Bottom Lateral, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034325 - Northern Pacific Engineering Drawing: Shop Plan - Lifting Girder Detail, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034326 - Northern Pacific Engineering Drawing: Shop Plan - Lifting Girder Detail, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034327 - Northern Pacific Engineering Drawing: Shop Plan - Lifting Guard, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034328 - Northern Pacific Engineering Drawing: Shop Plan - Lifting Guard, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034329 - Northern Pacific Engineering Drawing: Shop Plan - Lifting Guard, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034330 - Northern Pacific Engineering Drawing: Shop Plan - Ladder and Cage, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- 154 more...