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
- 1893 more...
- ItemBB016332 - Northern Pacific Engineering Drawing: Girders/Frames, Bridge 4 - Walla Walla River, Zangar Junction, Washington, undated
- ItemBB016333 - Northern Pacific Engineering Drawing: Casting/Bed Plates, Bridge 4 - Walla Walla River, Zangar Junction, Washington, undated
- ItemBB016334 - Northern Pacific Engineering Drawing: Girders/Cross Frame, Bridge 4 - Walla Walla River, Zangar Junction, Washington, undated
- ItemBB016335 - Northern Pacific Engineering Drawing: Girders/Lateral/Plate, Bridge 4 - Walla Walla River, Zangar Junction, Washington, undated
- ItemBB016336 - Northern Pacific Engineering Drawing: Girder Frame/Bracing, Bridge 4 - Walla Walla River, Zangar Junction, Washington, undated
- ItemBB016337 - Northern Pacific Engineering Drawing: Columns, Bridge 4 - Walla Walla River, Zangar Junction, Washington, undated
- ItemBB016338 - Northern Pacific Engineering Drawing: Sway Bracing, Bridge 4 - Walla Walla River, Zangar Junction, Washington, undated
- ItemBB016339 - Northern Pacific Engineering Drawing: Longitudinal Bracing, Bridge 4 - Walla Walla River, Zangar Junction, Washington, undated
- ItemBB016340 - Northern Pacific Engineering Drawing: Guard Rails, Bridge 4 - Walla Walla River, Zangar Junction, Washington, undated
- 5826 more...