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
- 5870 more...
- ItemBB025528 - Northern Pacific Engineering Drawing: Shop Plan - Operating Machinery, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025529 - Northern Pacific Engineering Drawing: Shop Plan - Assembly Detail, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025530 - Northern Pacific Engineering Drawing: Shop Plan - Details, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025531 - Northern Pacific Engineering Drawing: Shop Plan - Door Frame, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025532 - Northern Pacific Engineering Drawing: Shop Plan - Control Gear, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025533 - Northern Pacific Engineering Drawing: Shop Plan - Details, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025534 - Northern Pacific Engineering Drawing: Shop Plan - Miscellaneous, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025535 - Northern Pacific Engineering Drawing: Shop Plan - Shaft, etc., Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025536 - Northern Pacific Engineering Drawing: Shop Plan - Shim, etc., Bridge 1 - Columbia River, West of Pasco, Washington, undated
- 1849 more...