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
- 7570 more...
- ItemBB034327 - Northern Pacific Engineering Drawing: Shop Plan - Lifting Guard, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034328 - Northern Pacific Engineering Drawing: Shop Plan - Lifting Guard, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034329 - Northern Pacific Engineering Drawing: Shop Plan - Lifting Guard, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034330 - Northern Pacific Engineering Drawing: Shop Plan - Ladder and Cage, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034331 - Northern Pacific Engineering Drawing: Shop Plan - Miscellaneous Platform, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034332 - Northern Pacific Engineering Drawing: Shop Plan - Platform Details, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034333 - Northern Pacific Engineering Drawing: Shop Plan - Miscellaneous Platform, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034334 - Northern Pacific Engineering Drawing: Shop Plan - Miscellaneous Platform, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034335 - Northern Pacific Engineering Drawing: Shop Plan - Miscellaneous Tower, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- 149 more...