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
- 1921 more...
- ItemBB016360 - Northern Pacific Engineering Drawing: Proposed Circular Steel Shell, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB016361 - Northern Pacific Engineering Drawing: Velocity of Water, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB016362 - Northern Pacific Engineering Drawing: Broken Connection Angle, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB016363 - Northern Pacific Engineering Drawing: Title Sheet, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB016364 - Northern Pacific Engineering Drawing: Substructure Plan, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB016365 - Northern Pacific Engineering Drawing: Lift Span Plan/Elevation, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB016366 - Northern Pacific Engineering Drawing: New Pier 5, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB016367 - Northern Pacific Engineering Drawing: New Pier 6, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB016368 - Northern Pacific Engineering Drawing: Miscellaneous Pier Details, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- 5798 more...