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
- 3582 more...
- ItemBB033602 - Spokane, Portland and Seattle Railway Engineering Drawing: Deck Plan, Bridge 8.5 - Union Pacific Railroad, North of North Portland Junction, Oregon, undated
- ItemBB033603 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Steel Beam Span, Bridge 8.5 - Union Pacific Railroad, North of North Portland Junction, Oregon, undated
- ItemBB033604 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Steel Beam Span, Bridge 8.5 - Union Pacific Railroad, North of North Portland Junction, Oregon, undated
- ItemBB033605 - Spokane, Portland and Seattle Railway Engineering Drawing: Steel Details, Bridge 8.5 - Union Pacific Railroad, North of North Portland Junction, Oregon, undated
- ItemBB033607 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Structural Details, Bridge 8.5 - Union Pacific Railroad, North of North Portland Junction, Oregon, undated
- ItemBB033608 - Spokane, Portland and Seattle Railway Engineering Drawing: Plan and Details, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, undated
- ItemBB033609 - Spokane, Portland and Seattle Railway Engineering Drawing: Draw Protection, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, undated
- ItemBB033610 - Spokane, Portland and Seattle Railway Engineering Drawing: Draw Protection, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, undated
- ItemBB033611 - Spokane, Portland and Seattle Railway Engineering Drawing: Draw Protection, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, undated
- 327 more...