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
- 3835 more...
- ItemBB033862 - Spokane, Portland and Seattle Railway Engineering Drawing: Portal and Top Struts, Bridge 9.6 - Columbia River, Vancouver, Washington, undated
- ItemBB033863 - Spokane, Portland and Seattle Railway Engineering Drawing: Portal and Cross Frames, Bridge 9.6 - Columbia River, Vancouver, Washington, undated
- ItemBB033864 - Spokane, Portland and Seattle Railway Engineering Drawing: End Bearing Details, Bridge 9.6 - Columbia River, Vancouver, Washington, undated
- ItemBB033865 - Spokane, Portland and Seattle Railway Engineering Drawing: Stairway Operating House, Bridge 9.6 - Columbia River, Vancouver, Washington, undated
- ItemBB033866 - Spokane, Portland and Seattle Railway Engineering Drawing: Operating House Support, Bridge 9.6 - Columbia River, Vancouver, Washington, undated
- ItemBB033867 - Spokane, Portland and Seattle Railway Engineering Drawing: Reinforcement Beams, Bridge 9.6 - Columbia River, Vancouver, Washington, 1908
- ItemBB033868 - Spokane, Portland and Seattle Railway Engineering Drawing: Ladders and Supports, Bridge 9.6 - Columbia River, Vancouver, Washington, undated
- ItemBB033869 - Spokane, Portland and Seattle Railway Engineering Drawing: Details of End Lift, Bridge 9.6 - Columbia River, Vancouver, Washington, undated
- ItemBB033870 - Spokane, Portland and Seattle Railway Engineering Drawing: Soundings, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Washington, undated
- 74 more...