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
- 2167 more...
- ItemBB030400 - Spokane, Portland and Seattle Railway Engineering Drawing: General Plan, Bridge 270.0 - Box Canyon, North of Farrington, Washington, 1926
- ItemBB030401 - Spokane, Portland and Seattle Railway Engineering Drawing: Falsework Plan, Bridge 270.0 - Box Canyon, North of Farrington, Washington, 1926
- ItemBB030402 - Spokane, Portland and Seattle Railway Engineering Drawing: 74 Foot - 7 1/2 Inch Girder, Bridge 270.0 - Box Canyon, North of Farrington, Washington, undated
- ItemBB030403 - Spokane, Portland and Seattle Railway Engineering Drawing: Girder Spans, Bridge 270.0 - Box Canyon, North of Farrington, Washington, undated
- ItemBB030404 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Deck Plate Girder (DPG), Bridge 270.0 - Box Canyon, North of Farrington, Washington, undated
- ItemBB030405 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Deck Plate Girder (DPG), Bridge 270.0 - Box Canyon, North of Farrington, Washington, undated
- ItemBB030406 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bill of Material, Bridge 270.0 - Box Canyon, North of Farrington, Washington, undated
- ItemBB030407 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bill of Material, Bridge 270.0 - Box Canyon, North of Farrington, Washington, undated
- ItemBB030408 - Spokane, Portland and Seattle Railway Engineering Drawing: Girder Span, Bridge 270.0 - Box Canyon, North of Farrington, Washington, undated
- 1742 more...