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
- 5865 more...
- ItemBB023503 - Northern Pacific Engineering Drawing: Deck Renewal, Bridge 148 - 9 - Mile Creek, North of Slayton, Montana, 1951
- ItemBB025524 - Northern Pacific Engineering Drawing: Shop Plan - Tower Sheave, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025525 - Northern Pacific Engineering Drawing: Shop Plan - Material List, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025526 - Northern Pacific Engineering Drawing: Shop Plan - Tower Sheave, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025527 - Northern Pacific Engineering Drawing: Shop Plan - Line Shaft, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- 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
- 1854 more...