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
- 3495 more...
- ItemBB033513 - Spokane, Portland and Seattle Railway Engineering Drawing: Piers 2/3/4, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- ItemBB033514 - Spokane, Portland and Seattle Railway Engineering Drawing: Piers 3/4, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- ItemBB033515 - Spokane, Portland and Seattle Railway Engineering Drawing: Abutment 5, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- ItemBB033517 - Spokane, Portland and Seattle Railway Engineering Drawing: Through Girder Span/Framing Plan, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- ItemBB033518 - Spokane, Portland and Seattle Railway Engineering Drawing: Girder/Bearing, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- ItemBB033519 - Spokane, Portland and Seattle Railway Engineering Drawing: Through Girder Span, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- ItemBB033520 - Spokane, Portland and Seattle Railway Engineering Drawing: Beam Spans Framing Plan, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- ItemBB033521 - Spokane, Portland and Seattle Railway Engineering Drawing: Beam Spans Concrete/Bridge, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- ItemBB033522 - Spokane, Portland and Seattle Railway Engineering Drawing: Construct Procedure, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- 414 more...