Railroad Archives Online
- CollectionD0027 - Timothy Miller Collection
- Series007 - Spokane, Portland, and Seattle Railway
- Subseries Level 1009 - Engineering Records
- Subseries Level 2008 - Physical plant drawing
- Subseries Level 3001 - Bridges
- 2793 more...
- ItemBB032622 - Spokane, Portland and Seattle Railway Engineering Drawing: Telegraph Brackets, Bridge 9.6 - Columbia River, Vancouver, Washington, undated
- ItemBB032623 - Spokane, Portland and Seattle Railway Engineering Drawing: Telegraph Brackets, Bridge 9.6 - Columbia River, Vancouver, Washington, undated
- ItemBB032624 - Spokane, Portland and Seattle Railway Engineering Drawing: Cable Boxes, Bridge 9.6 - Columbia River, Vancouver, Washington, undated
- ItemBB032625 - Spokane, Portland and Seattle Railway Engineering Drawing: Hangers for Tranverses, Bridge 9.6 - Columbia River, Vancouver, Washington, undated
- ItemBB032626 - Spokane, Portland and Seattle Railway Engineering Drawing: Regulator, Bridge 9.6 - Columbia River, Vancouver, Washington, undated
- ItemBB032627 - Spokane, Portland and Seattle Railway Engineering Drawing: Power Supply - DC, Bridge 9.6 - Columbia River, Vancouver, Washington, undated
- ItemBB032628 - Spokane, Portland and Seattle Railway Engineering Drawing: Bracket Support, Bridge 9.6 - Columbia River, Vancouver, Washington, undated
- ItemBB032629 - Spokane, Portland and Seattle Railway Engineering Drawing: Wiring Diagram for Circuit, Bridge 9.6 - Columbia River, Vancouver, Washington, undated
- ItemBB032630 - Spokane, Portland and Seattle Railway Engineering Drawing: Wiring Diagram for Circuit, Bridge 9.6 - Columbia River, Vancouver, Washington, undated
- 1116 more...