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
- 6739 more...
- ItemBB028703 - Northern Pacific Engineering Drawing: Shop Plan - Beam/Channel, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028704 - Northern Pacific Engineering Drawing: Shop Plan - Beam/Channel, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028705 - Northern Pacific Engineering Drawing: Shop Plan - Beam/Channel, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028706 - Northern Pacific Engineering Drawing: Shop Plan - Beam/Channel, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028707 - Northern Pacific Engineering Drawing: Shop Plan - Floor Plates, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028708 - Northern Pacific Engineering Drawing: Shop Plan - 12 Gauge Plate, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028709 - Northern Pacific Engineering Drawing: Shop Plan - 12 Gauge Plate, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028710 - Northern Pacific Engineering Drawing: Shop Plan - 12 Gauge Plate, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB028711 - Northern Pacific Engineering Drawing: Shop Plan - 12 Gauge Plate, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- 980 more...