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
- 7668 more...
- ItemBB034427 - Northern Pacific Engineering Drawing: Shop Plan - Plans and Elevations, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034428 - Northern Pacific Engineering Drawing: Shop Plan - Hole Layout, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034429 - Northern Pacific Engineering Drawing: Shop Plan - Sheeting Diagram, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034430 - Northern Pacific Engineering Drawing: Shop Plan - Sheave Head, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034431 - Northern Pacific Engineering Drawing: Shop Plan - Sheeting Diagram, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034432 - Northern Pacific Engineering Drawing: Shop Plan - Signal System, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034433 - Northern Pacific Engineering Drawing: Shop Plan - Description and Service, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- 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
- 51 more...