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
- 7587 more...
- ItemBB034344 - Northern Pacific Engineering Drawing: Shop Plan - Counterweight Details, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034345 - Northern Pacific Engineering Drawing: Shop Plan - Counterweight Details, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034346 - Northern Pacific Engineering Drawing: Shop Plan - Counterweight Details, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034347 - Northern Pacific Engineering Drawing: Shop Plan - Top Right Girder, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034348 - Northern Pacific Engineering Drawing: Shop Plan - Top Beams, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034349 - Northern Pacific Engineering Drawing: Shop Plan - Platform Details, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034350 - Northern Pacific Engineering Drawing: Shop Plan - Tower Sheave, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- 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
- 132 more...