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
- 333 more...
- ItemBB014571 - Northern Pacific Engineering Drawing: 130 Pound Guard Rail and Clips, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB014572 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 14.2 - Van Sycle Creek, South of Zangar Junction, Washington, undated
- ItemBB014573 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 14.2 - Van Sycle Creek, South of Zangar Junction, Washington, undated
- ItemBB014575 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 16.1 - Van Sycle Creek, South of Zangar Junction, Washington, undated
- ItemBB014576 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 16.1 - Van Sycle Creek, South of Zangar Junction, Washington, undated
- ItemBB014578 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 7.1 - Van Sycle Creek, South of Zangar Junction, Washington, undated
- ItemBB014579 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 7.1 - Van Sycle Creek, South of Zangar Junction, Washington, undated
- ItemBB014580 - Northern Pacific Engineering Drawing: Shop Plan - Cast Iron Bed Plate, Bridge 6 - Chehalis River, Milburn, Washington, undated
- ItemBB014581 - Northern Pacific Engineering Drawing: Concrete Shim/Raise, Bridge 43 - Little Blackfoot Creek, West of Bradley, Montana, undated
- 7386 more...