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
- 7439 more...
- ItemBB034196 - Northern Pacific Engineering Drawing: Bearing Devices, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034197 - Northern Pacific Engineering Drawing: Rail Track and Deck, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034198 - Northern Pacific Engineering Drawing: Conley Rail Joints, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034199 - Northern Pacific Engineering Drawing: General Machinery Arrangement, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034200 - Northern Pacific Engineering Drawing: Machine Layout and Schedule, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034201 - Northern Pacific Engineering Drawing: Tower Sheave Span, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034202 - Northern Pacific Engineering Drawing: Operating Drum Assembly, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034203 - Northern Pacific Engineering Drawing: Power Circuits, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034204 - Northern Pacific Engineering Drawing: Control Details, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- 280 more...