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
- 3589 more...
- 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
- ItemBB033612 - Spokane, Portland and Seattle Railway Engineering Drawing: Wingwalls Piers, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, undated
- ItemBB033617 - Spokane, Portland and Seattle Railway Engineering Drawing: Deck Plan, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, undated
- ItemBB033618 - Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, 1962
- ItemBB033619 - Spokane, Portland and Seattle Railway Engineering Drawing: Tie Framing Plan, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, undated
- ItemBB033620 - Spokane, Portland and Seattle Railway Engineering Drawing: Details of Ties, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, undated
- ItemBB033621 - Spokane, Portland and Seattle Railway Engineering Drawing: Bridge Section, Bridge 58.8 - Wind River, East of Stevenson, Washington, undated
- ItemBB033622 - Spokane, Portland and Seattle Railway Engineering Drawing: Abutments, Bridge 58.8 - Wind River, East of Stevenson, Washington, undated
- 320 more...