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
- 7528 more...
- ItemBB034285 - Northern Pacific Engineering Drawing: Shop Plan - End Diagonal, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034286 - Northern Pacific Engineering Drawing: Shop Plan - Portal Details, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034287 - Northern Pacific Engineering Drawing: Shop Plan - Diagonal Post, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034288 - Northern Pacific Engineering Drawing: Shop Plan - Diagonal Post, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034289 - Northern Pacific Engineering Drawing: Shop Plan - Diagonal Post, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034290 - Northern Pacific Engineering Drawing: Shop Plan - Post Details, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034291 - Northern Pacific Engineering Drawing: Shop Plan - Post Details, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034292 - Northern Pacific Engineering Drawing: Shop Plan - Post and Strut, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034293 - Northern Pacific Engineering Drawing: Shop Plan - Top Chord, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- 191 more...