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
- 3119 more...
- ItemBB032959 - Spokane, Portland and Seattle Railway Engineering Drawing: Relocation, Bridge 182.8 - Underpass, East of Plymouth, Washington, 1949
- ItemBB032960 - Spokane, Portland and Seattle Railway Engineering Drawing: Relocation, Bridge 182.8 - Underpass, East of Plymouth, Washington, 1950
- ItemBB032961 - Spokane, Portland and Seattle Railway Engineering Drawing: Expansion Joint, Bridge 182.8 - Underpass, East of Plymouth, Washington, undated
- ItemBB032962 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Beams, Bridge 182.8 - Underpass, East of Plymouth, Washington, undated
- ItemBB032963 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Anchor Bolt Layout, Bridge 182.8 - Underpass, East of Plymouth, Washington, undated
- ItemBB032964 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Beams, Bridge 204.8 - Spukshowki Canyon, East of Berrian, Washington, 1960
- ItemBB032965 - Spokane, Portland and Seattle Railway Engineering Drawing: Access Road Underpass - Deck, Bridge 194.8 - Underpass, Washington, undated
- ItemBB032966 - Spokane, Portland and Seattle Railway Engineering Drawing: Abutments, Bridge A15.3 (172.1) - Road, West of Holbrook, Oregon, 1902
- ItemBB032967 - Spokane, Portland and Seattle Railway Engineering Drawing: Reinforcement Buttress, Bridge A15.3 (172.1) - Road, West of Holbrook, Oregon, undated
- 790 more...