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
- 3779 more...
- ItemBB033806 - Spokane, Portland and Seattle Railway Engineering Drawing: Brake Band Details, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, undated
- ItemBB033807 - Spokane, Portland and Seattle Railway Engineering Drawing: End Lift Motor and Machinery, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, undated
- ItemBB033808 - Spokane, Portland and Seattle Railway Engineering Drawing: Controller Table, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, undated
- ItemBB033809 - Spokane, Portland and Seattle Railway Engineering Drawing: Controller Stand, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, undated
- ItemBB033810 - Spokane, Portland and Seattle Railway Engineering Drawing: Turntable Switch and Details, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, undated
- ItemBB033811 - Spokane, Portland and Seattle Railway Engineering Drawing: Turntable Switch and Details, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, undated
- ItemBB033812 - Spokane, Portland and Seattle Railway Engineering Drawing: Limit Switch and Details, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, undated
- ItemBB033813 - Spokane, Portland and Seattle Railway Engineering Drawing: Operating House, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, undated
- ItemBB033814 - Spokane, Portland and Seattle Railway Engineering Drawing: Wiring Diagram Switchboard/Lights/Motors, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, undated
- 130 more...