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
- 7477 more...
- ItemBB034234 - Northern Pacific Engineering Drawing: Shop Plan - Truss Span, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034235 - Northern Pacific Engineering Drawing: Shop Plan - Deflection, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034236 - Northern Pacific Engineering Drawing: Shop Plan - Deflection, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034237 - Northern Pacific Engineering Drawing: Shop Plan - Anchor Bolt, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034238 - Northern Pacific Engineering Drawing: Shop Plan - Erection Drawing, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034239 - Northern Pacific Engineering Drawing: Shop Plan - Erection Drawing, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034240 - Northern Pacific Engineering Drawing: Shop Plan - Erection Drawing, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034241 - Northern Pacific Engineering Drawing: Shop Plan - Erection Drawing, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034242 - Northern Pacific Engineering Drawing: Shop Plan - Erection Plans, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- 242 more...