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
- 329 more...
- ItemBB014567 - Northern Pacific Engineering Drawing: Plates and Angle Details, Bridge 69, South of Ritzville, Washington, undated
- ItemBB014568 - Northern Pacific Engineering Drawing: Reinforce Center Plan, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB014569 - Northern Pacific Engineering Drawing: Proposed Powerhouse and Change, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB014570 - Northern Pacific Engineering Drawing: Light and Guy - Wire Details, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- 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
- 7390 more...