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
- 933 more...
- ItemBB022979 - Spokane, Portland and Seattle Railway Engineering Drawing: General Plans, Bridge E20.1 - Highway 26, South of Bowers Junction, Oregon, undated
- ItemBB022980 - Spokane, Portland and Seattle Railway Engineering Drawing: Detail 36 Foot Span, Bridge E20.1 - Highway 26, South of Bowers Junction, Oregon, undated
- ItemBB022981 - Spokane, Portland and Seattle Railway Engineering Drawing: General Plans, Bridge E20.1 - Highway 26, South of Bowers Junction, Oregon, undated
- ItemBB022982 - Spokane, Portland and Seattle Railway Engineering Drawing: Piers/Abutments, Bridge E20.1 - Highway 26, South of Bowers Junction, Oregon, undated
- ItemBB022983 - Spokane, Portland and Seattle Railway Engineering Drawing: Piling Plan, Bridge E20.1 - Highway 26, South of Bowers Junction, Oregon, undated
- ItemBB022984 - Spokane, Portland and Seattle Railway Engineering Drawing: General Plan/Elevation, Bridge E20.1 - Highway 26, South of Bowers Junction, Oregon, undated
- ItemBB022985 - Spokane, Portland and Seattle Railway Engineering Drawing: Falsework, Bridge E20.1 - Highway 26, South of Bowers Junction, Oregon, 1950
- ItemBB022986 - Spokane, Portland and Seattle Railway Engineering Drawing: Steel Shims, Bridge E20.1 - Highway 26, South of Bowers Junction, Oregon, undated
- ItemBB022987 - Spokane, Portland and Seattle Railway Engineering Drawing: General Elevation, Bridge E35.3 - Tualatin River, South of Tigard, Oregon, 1918
- 2976 more...