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
- 2323 more...
- ItemBB016773 - Northern Pacific Engineering Drawing: Fill Portion East Approach, Bridge 2 - Chehalis River, Washington, undated
- ItemBB016775 - Northern Pacific Engineering Drawing: Through Lateral Girder, Bridge 2 - Chehalis River, Washington, undated
- ItemBB016776 - Northern Pacific Engineering Drawing: Through Lateral Girder, Bridge 2 - Chehalis River, Washington, undated
- ItemBB016777 - Northern Pacific Engineering Drawing: Through Lateral Girder, Bridge 2 - Chehalis River, Washington, undated
- ItemBB016778 - Northern Pacific Engineering Drawing: Sketch/Profile/Cross Section, Bridge 2 - Chehalis River, Washington, undated
- ItemBB016779 - Northern Pacific Engineering Drawing: 1st Avenue South Overhead Bridge, First Avenue South Overpass, Seattle, Washington, 1935
- ItemBB016780 - Northern Pacific Engineering Drawing: 1st Avenue South Overhead Bridge, First Avenue South Overpass, Seattle, Washington, undated
- ItemBB016781 - Northern Pacific Engineering Drawing: 1st Avenue South Overhead Bridge, First Avenue South Overpass, Seattle, Washington, undated
- ItemBB016782 - Northern Pacific Engineering Drawing: 1st Avenue South Overhead Bridge, First Avenue South Overpass, Seattle, Washington, undated
- 5396 more...