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
- 3571 more...
- ItemBB033590 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Handrail, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- ItemBB033591 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Gutter, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- ItemBB033592 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Cam Diagram, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- ItemBB033593 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Cam Diagram, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- ItemBB033594 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Cam Diagram, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- ItemBB033595 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Cam Diagram, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- ItemBB033596 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Cam Diagram, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- ItemBB033597 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Cam Diagram, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- ItemBB033598 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Radial Bearing, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- 338 more...