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
- 2981 more...
- ItemBB032818 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Piece Location, Bridge 47.5 - Access Road, East of Skamania, Washington, undated
- ItemBB032819 - Spokane, Portland and Seattle Railway Engineering Drawing: Contour Cross, Bridge 53.5 - Rock Creek, East of North Bonneville, Washington, undated
- ItemBB032820 - Spokane, Portland and Seattle Railway Engineering Drawing: General Plan, Bridge 53.5 - Rock Creek, East of North Bonneville, Washington, 1911
- ItemBB032821 - Spokane, Portland and Seattle Railway Engineering Drawing: Abutment Plan, Bridge 53.5 - Rock Creek, East of North Bonneville, Washington, undated
- ItemBB032822 - Spokane, Portland and Seattle Railway Engineering Drawing: New West Abutment, Bridge 53.5 - Rock Creek, East of North Bonneville, Washington, 1911
- ItemBB032823 - Spokane, Portland and Seattle Railway Engineering Drawing: East Abutment, Bridge 53.5 - Rock Creek, East of North Bonneville, Washington, undated
- ItemBB032824 - Spokane, Portland and Seattle Railway Engineering Drawing: East Abutment Change, Bridge 53.5 - Rock Creek, East of North Bonneville, Washington, 1911
- ItemBB032825 - Spokane, Portland and Seattle Railway Engineering Drawing: New East Abutment, Bridge 53.5 - Rock Creek, East of North Bonneville, Washington, 1911
- ItemBB032827 - Spokane, Portland and Seattle Railway Engineering Drawing: Tie Frame Plan, Bridge 53.5 - Rock Creek, East of North Bonneville, Washington, undated
- 928 more...