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
- 7692 more...
- ItemBB034451 - Northern Pacific Engineering Drawing: Shop Plan - Erection Plan, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034452 - Northern Pacific Engineering Drawing: Shop Plan - Sections, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034453 - Northern Pacific Engineering Drawing: Shop Plan - MNLK Erection, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034454 - Northern Pacific Engineering Drawing: Shop Plan - Ventilation System, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034455 - Northern Pacific Engineering Drawing: Shop Plan - Cofferdam, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034456 - Northern Pacific Engineering Drawing: Shop Plan - Miscellaneous, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034457 - Northern Pacific Engineering Drawing: Shop Plan - Miscellaneous, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034458 - Northern Pacific Engineering Drawing: Shop Plan - Cutting Edge, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034459 - Northern Pacific Engineering Drawing: Shop Plan - Cutting Edge, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- 27 more...