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
- 7675 more...
- ItemBB034434 - Northern Pacific Engineering Drawing: Shop Plan - Terminal Box, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034435 - Northern Pacific Engineering Drawing: Shop Plan - Joint Box, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034436 - Northern Pacific Engineering Drawing: Shop Plan - Equipment and Conduit, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034437 - Northern Pacific Engineering Drawing: Shop Plan - Miscellaneous Details, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034438 - Northern Pacific Engineering Drawing: Shop Plan - Navigation Lighting, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034439 - Northern Pacific Engineering Drawing: Shop Plan - Miscellaneous Details, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034440 - Northern Pacific Engineering Drawing: Shop Plan - Conduit Layout, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034441 - Northern Pacific Engineering Drawing: Shop Plan - General Details, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034442 - Northern Pacific Engineering Drawing: Shop Plan - General Layout, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- 44 more...