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
- 1902 more...
- ItemBB016341 - Northern Pacific Engineering Drawing: Erection Diagram, Bridge 4 - Walla Walla River, Zangar Junction, Washington, undated
- ItemBB016342 - Northern Pacific Engineering Drawing: General Plan, Bridge 4 - Walla Walla River, Zangar Junction, Washington, undated
- ItemBB016343 - Northern Pacific Engineering Drawing: General Plan/Elevation, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB016344 - Northern Pacific Engineering Drawing: Sketch Showing Erosion, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB016345 - Northern Pacific Engineering Drawing: General Plan, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, 1949
- ItemBB016346 - Northern Pacific Engineering Drawing: General Plan/High Water, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB016347 - Northern Pacific Engineering Drawing: General Plan/Tie Plan, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB016348 - Northern Pacific Engineering Drawing: Creek/Bridge/Rail Detail, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB016349 - Northern Pacific Engineering Drawing: Link/Lever/Shaft/Clamp, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- 5817 more...