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
- 2172 more...
- 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
- ItemBB030409 - Spokane, Portland and Seattle Railway Engineering Drawing: Tower Spans - Girders, Bridge 270.0 - Box Canyon, North of Farrington, Washington, undated
- ItemBB030410 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Detail - Girders, Bridge 270.0 - Box Canyon, North of Farrington, Washington, undated
- ItemBB030411 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Detail - Girders, Bridge 270.0 - Box Canyon, North of Farrington, Washington, undated
- ItemBB030412 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Detail - Girders, Bridge 270.0 - Box Canyon, North of Farrington, Washington, undated
- ItemBB030413 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Cross Frame, Bridge 270.0 - Box Canyon, North of Farrington, Washington, undated
- 1737 more...