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
- 2973 more...
- ItemBB032810 - Spokane, Portland and Seattle Railway Engineering Drawing: Plan and Profile, Bridge 47.5 - Access Road, East of Skamania, Washington, undated
- ItemBB032811 - Spokane, Portland and Seattle Railway Engineering Drawing: Project Map and Index, Bridge 47.5 - Access Road, East of Skamania, Washington, undated
- ItemBB032812 - Spokane, Portland and Seattle Railway Engineering Drawing: Site Map, Bridge 47.5 - Access Road, East of Skamania, Washington, undated
- ItemBB032813 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bridge Beam, Bridge 47.5 - Access Road, East of Skamania, Washington, undated
- ItemBB032814 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bridge Beam, Bridge 47.5 - Access Road, East of Skamania, Washington, undated
- ItemBB032815 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bridge Bear, Bridge 47.5 - Access Road, East of Skamania, Washington, undated
- ItemBB032816 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Miscellaneous Steel, Bridge 47.5 - Access Road, East of Skamania, Washington, undated
- ItemBB032817 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Deck Drain, Bridge 47.5 - Access Road, East of Skamania, Washington, undated
- ItemBB032818 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Piece Location, Bridge 47.5 - Access Road, East of Skamania, Washington, undated
- 936 more...