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
- 918 more...
- ItemBB022962 - Spokane, Portland and Seattle Railway Engineering Drawing: Firewall - Pile Trestle, Bridge U16.7 - Underpass, West of United Junction, Oregon, undated
- ItemBB022964 - Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge E17.3 - Underpass, Bowers Junction, Oregon, undated
- ItemBB022965 - Spokane, Portland and Seattle Railway Engineering Drawing: Steel Details, Bridge E17.3 - Underpass, Bowers Junction, Oregon, 1950
- ItemBB022966 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - 24 Foot Span, Bridge E17.3 - Underpass, Bowers Junction, Oregon, undated
- ItemBB022967 - Spokane, Portland and Seattle Railway Engineering Drawing: Abutments, Bridge E17.3 - Underpass, Bowers Junction, Oregon, undated
- ItemBB022968 - Spokane, Portland and Seattle Railway Engineering Drawing: Plan/Elevation, Bridge E20.1 - Highway 26, South of Bowers Junction, Oregon, undated
- ItemBB022969 - Spokane, Portland and Seattle Railway Engineering Drawing: Abutment Details, Bridge E20.1 - Highway 26, South of Bowers Junction, Oregon, undated
- ItemBB022970 - Spokane, Portland and Seattle Railway Engineering Drawing: Pier Details, Bridge E20.1 - Underpass, South of Bowers Junction, Oregon, undated
- ItemBB022971 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Post/Chord, Bridge E35.3 - Tualatin River, South of Tigard, Oregon, undated
- 2991 more...