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
- 7594 more...
- ItemBB034351 - Northern Pacific Engineering Drawing: Shop Plan - Girder Span Detail, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034352 - Northern Pacific Engineering Drawing: Shop Plan - Girder Span Detail, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034353 - Northern Pacific Engineering Drawing: Shop Plan - Girder Span Detail, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034354 - Northern Pacific Engineering Drawing: Shop Plan - Bottom Chord, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034355 - Northern Pacific Engineering Drawing: Shop Plan - Bottom Chord, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034356 - Northern Pacific Engineering Drawing: Shop Plan - T Chord Details, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034357 - Northern Pacific Engineering Drawing: Shop Plan - End Diagonal, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034358 - Northern Pacific Engineering Drawing: Shop Plan - Diagonal Post, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034359 - Northern Pacific Engineering Drawing: Shop Plan - Portal Strut, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- 125 more...