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
- 7654 more...
- ItemBB034411 - Northern Pacific Engineering Drawing: Shop Plan - General Plan, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034414 - Northern Pacific Engineering Drawing: Shop Plan - Wall Section, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034415 - Northern Pacific Engineering Drawing: Shop Plan - Frames, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034416 - Northern Pacific Engineering Drawing: Shop Plan - Wall Section, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034417 - Northern Pacific Engineering Drawing: Shop Plan - Window Frame, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034418 - Northern Pacific Engineering Drawing: Shop Plan - Miscellaneous Angle, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034419 - Northern Pacific Engineering Drawing: Shop Plan - Column and D - J, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034420 - Northern Pacific Engineering Drawing: Shop Plan - Machinery House, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034421 - Northern Pacific Engineering Drawing: Shop Plan - Machinery House, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- 65 more...